The Night She Disappeared (April Henry)

Gaby works part-time as a delivery girl at Pete's Pizza. She also drives a Mini Cooper. One night Kayla, who also works at Pete's, goes missing. A customer who had placed an order had asked whether the girl in the Mini Cooper was working that night. Gaby is horrified that Kayla's fate was really meant for her and she is determined to find the missing girl. She teams up with another co-worker, Drew, and together they set out to prove that Kayla isn't dead – and to find her before she is.