Titus Welliver

Titus Welliver, always the villain...

The 50-year-old actor has landed a multi-episode arc on CSI as John, an arrogant military contractor who goes toe-to-toe with Russell (Ted Danson), TVLine.com reports. As previously announced, Annabeth Gish has been cast as his wife, who's hiding a secret.

CSI taps Matt Lauria, Annabeth Gish for multi-episode arcs

Welliver is known for taking on villainous roles. On Lost, he played the mysterious and evil Man in Black. He portrayed one of the Four Horsemen of the Apocalypse on Supernatural, as well as an evil Irish mobster on Sons of Anarchy. He'll also return to The Good Wife as Peter's nemesis in the Nov. 6 episode.