Numb3rs Episode 5.02 Decoy Effect

When a woman is murdered after being abducted and forced to withdraw random amounts of money from her ATM, the team discovers a pattern of increased ATM abductions in the area. Most of the victims are being released after being robbed and assaulted; however, the gravity of the crime convinces our guys that the stakes for these crimes were for something far bigger than a few hundred dollars. Video surveillance of our suspects lead us to believe that there is a bigger mastermind employing petty thief criminals to do his dirty work. Nikki goes undercover as one of many planted decoys and gets herself abducted.

Their theory proves correct as the mastermind was using the random ATM withdrawals as research in pulling off an armored vehicle heist based on tracking the refueling of ATM machines.