I'll Be Seeing You (S04E09)

Closer than they've ever been before, Allison (Salli Richardson-Whitfield) and Carter (Colin Ferguson) join forces personally as well as professionally when Jo (Erica Cerra) and Fargo (Neil Grayston) enlist them to help find a stolen Global Dynamics project. The theft has unexpected roots in a plan hatched by Dr. Grant (James Callis) and his colleague Adam Barlowe (Elias Toufexis), one honorable in intent but taken to drastic extremes. Zane (Niall Matter) insists that Grant is the logical prime suspect, an allegation bolstered by the fact that Grant has gone missing. While Allison and Henry (Joe Morton) pursue a lead on locating the device, Carter and Jo (Erica Cerra) dig into Grant's records. There, they find an astonishing connection between their supposed friend Grant and the manipulative Beverly Barlowe (Debrah Farentino). (iTunes)