10-7 is the twenty-fourth episode of Season 3 of CSI: Miami and also the Season finale.
While investigating the murder of man hired to make dirty bombs that terrorists intend to set off in Miami, Horatio finds the bloody fingerprint of his brother, Raymond, whom he believed to be dead. However, when Raymond's son is kidnapped, he emerges from deep undercover and the estranged brothers must work together to save the boy. Meanwhile, while processing a crime scene, an unknown assailant holds a gun to Calleigh's head and, after a deadly confrontation in her ballistics lab, she is left doubting that she can continue as a CSI.
- Horatio's brother, Raymond Caine Sr is introduced for the first time.
- It's soon revealed that John Hagen was the one responsible for holding a gun to Calleigh's head at the crime scene.
- Hagen later committs suicide in the Ballistics Lab, leaving Calleigh shaken.
- Raymond is reunited with Yelina and Ray Jr with the three of them heading off to Brazil to bring a new life together.