'Big Brother' Season 18: Meet the 12 New Houseguests

Expect the unexpected — Big Brother kicks off its 18th season next week. The series introduced 12 new houseguests Tuesday, giving fans an early glimpse at the personalities who will be competing over the course of 99 days. Check out the (first batch?) of contestants ahead for the summer show that'll premiere over two nights on Wednesday, June 22 at 8 p.m. ET and Thursday, June 23 at 9 p.m. ET on CBS.