第 3 季 共 13 集
播出时间：2010年4月1日
第 1 集 Father Goes West
播出时间：2010年4月1日
A former high line thief from Boston tries to give up crime for the sake of his teenage son, and Mary and Marshall search for the person who nearly killed Mary.
第 2 集 When Mary Met Marshall
播出时间：2010年4月8日
In 2003 Mary meets Marshall for the first time as they get lovers CLAUDIA TOBIN and HENRY DOER into the WitSec program, and it's a toss-up whose relationship is going to last: Claudia and Henry's, or Mary and Marshall's.
第 3 集 Coma Chameleon
播出时间：2010年4月15日
ATF agent Wade Guthrie is shot and left for dead by gun trader Jasper Malone. After three years in a coma, he wakes to find the world he left behind has drastically changed.
第 4 集 Whistle Stop
播出时间：2010年4月22日
Mary and Marshall try to help FBI Agent Mike Faber convince his informant to enter WITSEC. Despite their best efforts, the informant refuses their protection and gets himself into a heap of trouble. After Mary, Marshall and Agent Faber save the informant from certain death, he and his family join Witsec.
第 5 集 Fish Or Cut Betta
播出时间：2010年4月29日
Mary’s new witness falls in love for the first time; Mary must stop her witness from taking out his pain in the form of an explosive device.
第 6 集 No Clemency for Old Men
播出时间：2010年5月6日
Mary tries to help a parolee acclimate to life outside of prison after having spent 38 years behind bars while Marshall helps out when one of Mary's witnesses no longer wants to work with her.
第 7 集 Love's Faber Lost
播出时间：2010年5月13日
Mary's new witness is part of a mortgage fraud ring and is an important link in the case of FBI Agent Faber.
第 8 集 Son Of Mann
播出时间：2010年5月20日
Marshall is being evaluated in the field by his father (Geoff Pierson) during a joint fugitive operation. Mary meets Brandi's secret friend.
第 9 集 Death Becomes Her
播出时间：2010年6月3日
A woman wants to escape from her family, who are heavily involved in organized crime, but a secret from her past puts her eligibility for the Witness Protection program in jeopardy.
第 10 集 Her Days Are Numbered
播出时间：2010年6月10日
A witness with Aspergers who has no social filter and can't lie stymies Mary, particularly when the witness refuses to testify against her only friend – the key conspirator in a numbers case. Meanwhile, Marshall and Stan race to figure out why an Immigration and Customs Enforcement agent is holding up the visa of a key witness before she is deported. Plus, Brandi reveals her plan for the money she made by investing with Scott.
第 11 集 The Born Identity
播出时间：2010年6月17日
Mary helps her latest witness, a homeless man who's struggling with the program, find his birth parents. But the search could cause more problems than she anticipated. Elsewhere, Scott asks to borrow more money, raising a red flag for Brandi.
第 12 集 WITSEC Stepmother
播出时间：2010年6月24日
Mary keeps an eye on a teen witness whose separated parents are too distracted by their own issues to pay attention to their daughter. Marshall thinks a witness may have betrayed his brother; and Brandi tends to Scott after he's attacked.
第 13 集 A Priest Walks Into a Bar
播出时间：2010年7月1日
After a priest witnesses the murder of a parishioner, he will have to give up his special vocation in order to enter WITSEC.
