<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>AGL RES INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>001204106</cusip>
			<value>3963</value>
			<shrsOrPrnAmt>
				<sshPrnamt>62104</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>62104</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>AIRGAS INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>009363102</cusip>
			<value>29739</value>
			<shrsOrPrnAmt>
				<sshPrnamt>215000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>215000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>ATMEL CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>049513104</cusip>
			<value>14895</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1730000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>1730000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>BOK FINL CORP</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>05561Q201</cusip>
			<value>598</value>
			<shrsOrPrnAmt>
				<sshPrnamt>10000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Put</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>10000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>CULLEN FROST BANKERS INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>229899109</cusip>
			<value>1620</value>
			<shrsOrPrnAmt>
				<sshPrnamt>27000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Put</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>27000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>DELPHI AUTOMOTIVE PLC</nameOfIssuer>
			<titleOfClass>SHS</titleOfClass>
			<cusip>G27823106</cusip>
			<value>240</value>
			<shrsOrPrnAmt>
				<sshPrnamt>2800</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>2800</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>FIDELITY NATL INFORMATION SV</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>31620M106</cusip>
			<value>23634</value>
			<shrsOrPrnAmt>
				<sshPrnamt>390000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>390000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>HALLIBURTON CO</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>406216101</cusip>
			<value>10212</value>
			<shrsOrPrnAmt>
				<sshPrnamt>300000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>300000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>HEWLETT PACKARD ENTERPRISE C</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>42824C109</cusip>
			<value>28373</value>
			<shrsOrPrnAmt>
				<sshPrnamt>1866671</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>1866671</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>ISHARES TR</nameOfIssuer>
			<titleOfClass>RUSSELL 2000 ETF</titleOfClass>
			<cusip>464287655</cusip>
			<value>1971</value>
			<shrsOrPrnAmt>
				<sshPrnamt>17500</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Put</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>17500</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>KEURIG GREEN MTN INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>49271M100</cusip>
			<value>510</value>
			<shrsOrPrnAmt>
				<sshPrnamt>5666</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>5666</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>KINDER MORGAN INC DEL</nameOfIssuer>
			<titleOfClass>*W EXP 05/25/201</titleOfClass>
			<cusip>49456B119</cusip>
			<value>9</value>
			<shrsOrPrnAmt>
				<sshPrnamt>151058</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>151058</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>KING DIGITAL ENTMT PLC</nameOfIssuer>
			<titleOfClass>ORD SHS</titleOfClass>
			<cusip>G5258J109</cusip>
			<value>1004</value>
			<shrsOrPrnAmt>
				<sshPrnamt>56148</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>56148</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>LIONS GATE ENTMNT CORP</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>535919203</cusip>
			<value>324</value>
			<shrsOrPrnAmt>
				<sshPrnamt>10000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>10000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>LIONS GATE ENTMNT CORP</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>535919203</cusip>
			<value>567</value>
			<shrsOrPrnAmt>
				<sshPrnamt>17500</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>17500</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>MYLAN N V</nameOfIssuer>
			<titleOfClass>SHS EURO</titleOfClass>
			<cusip>N59465109</cusip>
			<value>51164</value>
			<shrsOrPrnAmt>
				<sshPrnamt>946250</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>946250</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>NXP SEMICONDUCTORS N V</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>N6596X109</cusip>
			<value>67063</value>
			<shrsOrPrnAmt>
				<sshPrnamt>796000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>796000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>OCCIDENTAL PETE CORP DEL</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>674599105</cusip>
			<value>1014</value>
			<shrsOrPrnAmt>
				<sshPrnamt>15000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Put</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>15000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>OFFICE DEPOT INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>676220106</cusip>
			<value>157</value>
			<shrsOrPrnAmt>
				<sshPrnamt>27778</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>27778</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>PARTNERRE LTD</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>G6852T105</cusip>
			<value>115984</value>
			<shrsOrPrnAmt>
				<sshPrnamt>830000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>830000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>PFIZER INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>717081103</cusip>
			<value>624</value>
			<shrsOrPrnAmt>
				<sshPrnamt>19332</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>19332</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>PLAINS ALL AMERN PIPELINE L</nameOfIssuer>
			<titleOfClass>UNIT LTD PARTN</titleOfClass>
			<cusip>726503105</cusip>
			<value>347</value>
			<shrsOrPrnAmt>
				<sshPrnamt>15000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>15000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>PRECISION CASTPARTS CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>740189105</cusip>
			<value>49724</value>
			<shrsOrPrnAmt>
				<sshPrnamt>214319</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>214319</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>RADIUS HEALTH INC</nameOfIssuer>
			<titleOfClass>COM NEW</titleOfClass>
			<cusip>750469207</cusip>
			<value>8308</value>
			<shrsOrPrnAmt>
				<sshPrnamt>135000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>135000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>SANDISK CORP</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>80004C101</cusip>
			<value>3800</value>
			<shrsOrPrnAmt>
				<sshPrnamt>50000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>50000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>SPDR SERIES TRUST</nameOfIssuer>
			<titleOfClass>S&amp;P OILGAS EXP</titleOfClass>
			<cusip>78464A730</cusip>
			<value>1209</value>
			<shrsOrPrnAmt>
				<sshPrnamt>40000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>40000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>STAPLES INC</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>855030102</cusip>
			<value>400</value>
			<shrsOrPrnAmt>
				<sshPrnamt>42213</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>42213</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>SYNCHRONY FINL</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>87165B103</cusip>
			<value>758</value>
			<shrsOrPrnAmt>
				<sshPrnamt>24934</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>24934</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>TECK RESOURCES LTD</nameOfIssuer>
			<titleOfClass>CL B</titleOfClass>
			<cusip>878742204</cusip>
			<value>11580</value>
			<shrsOrPrnAmt>
				<sshPrnamt>3000000</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<putCall>Call</putCall>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>3000000</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>VMWARE INC</nameOfIssuer>
			<titleOfClass>CL A COM</titleOfClass>
			<cusip>928563402</cusip>
			<value>551</value>
			<shrsOrPrnAmt>
				<sshPrnamt>9743</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>9743</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
</informationTable>
