The team investigates the murder of someone from Booth and Brennan's past. Meanwhile, Aubrey faces a moral dilemma of his own when he discovers his dad is back in the picture.
- Temperance Brennan - Emily Deschanel
- Seeley Booth - David Boreanaz
- Jack Hodgins - T.J. Thyne
- Angela Montenegro - Michaela Conlin
- Camille Saroyan - Tamara Taylor
- James Aubrey - John Boyd
Intern of the WeekEdit
- Patricia Belcher as Caroline Julian
- Blake Berris as Jake Tompkins
- Elizabeth Tobias as Tracy Trout
- Carter Hastings as Declan Trout
- John Bishop as Tom Ellis
- Jay Glazer as Dave Hines
- Michael James Lazar as Mike Reiss
- La Monde Byrd as Ted McKinney
- Guy Boyd as Philip Aubrey
- Julie Stewart-Binks as Meredith Brandt
- Booth mentioned that he killed a Serbian General in 1995 and that someone who knew them is trying to get revenge. Booth first mentioned him in the end of The Soldier on the Grave as Radik who was responsible for the deaths of over 232 people. Booth was the sniper who shot Radik from 3,000 feet away right in front of his son in the middle of his birthday party.
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