Perri Matthews is a girl who has seen and been through a lot. She expects to go through even more when she steps through the doors of the Miami Dade crime labs. What she doesn't expect is the roller-coaster ride that comes with being Miami's newest CSI. Her life is at risk, she has a brother who needs her around more than he realises, and of course there are always complications when romantic feelings emerge for her colleague Ryan Wolfe. Together they might just break through Perri's brick walls, and they might just die trying.