After a sexual assault investigation is stalled for months, a woman puts her accusations against a popular athlete on a billboard.
Jack decides to fully commit to his relationship with Elisa and goes shopping for an egagement ring. Meanwhile, Liz finds out that Elisa is keeping a secret. Plus, Jenna falls for an attractive EMT.
Sam starts dating a local councilwoman who thinks he's a prostitute. Tim and his wife are inspired by Sam's new lifestyle and try role-playing.
After the body of a young woman is found with multiple gunshot wounds, Intelligence identify links to other deaths and realise they are dealing with a serial killer; Lindsay finally meets her biological father.
