Chuck Versus The Cliffhanger

S4 E24: In the fourth season finale, before he can kiss the bride, Chuck must enlist his wedding party to take down Vivian Volkoff (recurring guest star Lauren Cohan) and stop her from destroying the big day. When he turns to Alexei Volkoff (recurring guest star Timothy Dalton) for help, the CIA sends its toughest agent, Clyde Decker (guest star Richard Burgi – The Sentinel, Desperate Housewives, The District), to stop them. Linda Hamilton and Mekenna Melvin also guest star.