The gear-head equivalent of fast food, USA's Burn Notice, returns with a new wrinkle in its fourth season. Michael Westen (Jeffrey Donovan) gets an irresistible offer to work for the very people who relieved him from spy duty, so he rejoins Fiona (Gabrielle Anwar) and Sam (Bruce Campbell), while working with Vaughn (The Wire's Robert Wisdom) on the side. "Good name for a vampire," quips Sam, who doesn't trust the guy. When Michael burns another spy in the process, he adds Jesse (Third Watch's Coby Bell) to the team and tries to remove the burn--all without admitting his guilt.

Together, they help a doctor out of a jam (The Shield's Benito Martinez), go after a crazy hit woman (Numbers' Navi Rawat), and take the heat off a veteran spy (Burt Reynolds with an ill-advised neckerchief). Michael also reunites with his nemesis Simon (Garret Dillahunt) in hopes of taking down a common enemy (played by Robert Patrick). Other cases involve biker gangs, bad accents, kidnappings, prison riots, and a catfight (between Anwar and returning guest star Callie Thorne).

Adding a new character to an established show represents a risk, but Bell fits right in, and complicates the connection between Michael and Fiona, with whom he shares a "tactical" kiss. He also finds allies in Madeline (Sharon Gless), and his ex-handler, Marv (Richard Kind). Soft stuff aside, Burn Notice remains as destructive as ever with car crashes, fiery explosions, and high-powered weaponry, but there's nothing else quite like it on TV. Extras include a featurette on Sam, a stunt demonstration, deleted scenes, a gag reel, and chops-busting commentary on the season finale. --Kathleen C. Fennessy