JACKSON LEARNS HIS MOTHER IS MISSING IN AFRICA, BUT BEFORE HE CAN LOOK FOR HER, HE AND THE TEAM MUST CONTEND WITH A HOSTILE FORCE THAT HAS OVERTAKEN THEIR PLANE, ON "ZOO," TUESDAY, AUGUST 9

"Zero Sum" - Jackson learns his mother is missing in Africa, but before he can look for her, he and the team must contend with a hostile force that has overtaken their plane. Also, Jamie learns a shocking secret about Abraham, on ZOO, Tuesday, August 9 (9:00-10:00 PM, ET/PT), on the CBS Television Network.

REGULAR CAST:

James Wolk (Jackson Oz)
Kristen Connolly (Jamie Campbell)
Billy Burke (Mitch Morgan)
Nonso Anozie (Abraham Kenyatta)
Nora Arnezeder (Chloe Tousignant)
Alyssa Diaz (Dariela Marzan)
Josh Salatin (Logan)

GUEST CAST:

Tom Butler (Greg Trotter)
Peter Outerbridge (General Davies)
Joanne Kelly (Allison Shaw)
Sandy Robson (Lead Mercenary)
Leo Rano (Farkas)
Scott Nicholson (Browne)
Darren E. Scott (Stover)
BJ Harrison (Grandmother)
Rema Kibayi (Aide Worker)
Ava Galgani (Nurse)

WRITTEN BY: Bryan Oh & Nick Parker

DIRECTED BY: Anton Cropper