+++ Warning, this contains spoilers for the prior season, but no major giveaways from the fourth season +++
Season four of Burn Notice picks up almost immediately after the events at the end of season three, with Michael still in prison, having been framed for the crimes committed by Simon Escher. He is given a deal, basically that he can be let out of jail if he starts working for the organization that burned him. He reluctantly agrees and is assigned a handler named Vaughn, played by Robert Wisdom. As you can imagine, the relationship does not stay on good terms, and by the end of the season Michael (and everyone around him) is in danger yet again. This season sees a new addition to the cast with Coby Bell being brought on as Jessee Porter, another counter-intelligence agent who is burned. The big story arc of the season involves a NOC list, naming members of the organization, and the team trying to get possession of the list. The season ends on yet another cliffhanger (not with the life of a character hanging in the balance) teasing yet another new direction. There are several recognizable guest stars this season including Richard Kind, Tim Mattheson, John Doman, and Dylan Baker.
For those who get the DVD set, the extras include a commentary track on the season premiere, deleted scenes, a gag reel, a feature on the stunts, and a feature in which the casts of Burn Notice and White Collar roast the other show, a feature on the stunts of the show, and a feature called Sam Axe's Guide to Ladies and Libations, which is basically a fun bit with Bruce Campbell.
Overall, the series continues to be well-written and acted. You still have to suspend your disbelief, but not so much that anything comes across as just plain stupid. It has a good mix of action, comedy, and drama, and the cast has very good chemistry. So, if you have liked the prior seasons of the show you will probably enjoy this one as well.