Stu "Large" Riley

When Summer and Marissa receive invitations for famous actor Grady Bridges' birthday party in LA, the girls decide to take Ryan and Seth along with them to join in the fun.

The team reopen the 1992 case of a 14-year-old inner-city maths whiz who was shot after his 16-year-old half-brother exploited the genius's knack for counting cards and cracking safes to benefit a local gang.