To stop an impending terrorist threat, Michael is drawn into a rather dubious alliance with a man named Vaughn. Meanwhile, he helps Sam and Fiona run interference between a lawyer and lawless biker gang.
Michael convinces Vaughn to let him take care of Jesse Porter, the spy he recently burned, but he needs to find him first. Meanwhile, Madeline decides to take on a renter to have more stable people in her life.
When dangerous mobsters threaten a port worker, Michael takes on the case. With Jesse, Michael also looks for intel on an underground-artillery operation.
Fiona and Jesse seek information on a weapons runner, while Sam and Michael get into a hostage standoff at a bank.
A reluctant doctor turns to Michael for help when a group of vicious drug dealers terrorize his neighborhood clinic. Along the way, Michael is drawn into a dangerous game of cat and mouse with a sadistic hugger
Michael and Fiona go undercover as security consultants in order to catch an antiques thief. Meanwhile, Sam and Jesse investigate a killing.
A former CIA operative named Paul Anderson gets into trouble with some Russian spies and asks for Michael's help.
Michael, Jesse and Sam have to come up with a plan to save Fiona when a job protecting a businessman at a house party takes a bad turn and puts Fiona's life at risk.
Michael pretends to be a hit man to save the life of a witness.
When the life of Sam's friend who is serving time in a high-security prison is in danger, Michael has to find a way in to protect Sam's friend.
After losing all her life savings, a womanizer's victim turns to Michael for help.
When the daughter of a defense-attorney is kidnapped by a client of her father's, Michael tries to find the girl.
Michael tries to stop a lawyer who is killing gang members out of revenge. With Jesse, Michael also tries to find a stolen document.
Michael and one of his enemies ally to make sure chemical weapons don't fall into wrong hands.
After being kicked out by his second wife Loretta, Nick Tortelli, Carla's ex-husband comes to Cheers asking Carla to take him back.
Michael and Sam work to clear an old friend of Sam's; Michael must meet with Jesse's handler.
Brennan vows to release valuable data; Michael must try to turn the tables.
Michael's actions force a tactical assault team to pursue him.