YingYing Zhang went to the University of Illinois to further her education.  She missed a bus connection and was running late to an appointment, she accepted a ride from a stranger and was never seen again.   Surveillance video found showed that YingYing got into a black Saturn Astra.  Brendt Christensen's owned 1 of the 18 Saturn Astras registered in the county so suspects were narrowed down quickly.  His wife wore a wire to prove that her husband had to involvement but what he revealed was shocking.