The team's investigation into a bank robbery leads to a teenage gang run by an older criminal; Lindsay must make a tough choice in the heat of the moment.
A man opens fire during a political rally, injuring a senatorial candidate and causing Lindsay to get hurt in the chaos.
When a clergyman is found shot dead on the grave of former CSI detective Warrick Brown, the case brings up old memories as the team search for the killer, especially as Brown's family appear to be involved.
The Heck family decide to spend spring break doing a spring clean. Meanwhile, Brick starts a neighbourhood information stand which proves to be lucrative.
Mike gets Brick involved in basketball when his teachers say he is `socially challenged', thinking it will help him make friends.