Gabriel Hogan

When an enraged gunman takes a hostage in a public square, the team must take drastic action and deal with the consequences.

Insurgents in Sudan attack volunteer doctors -- including the man married to DiNozzo's ex-girlfriend, Jeanne Benoit.

A desperate father turns a policeman's gun on a surgical team, demanding a heart transplant for his dying daughter.

Ty struggles to deal with the fact that Amy has found the engagement ring and has to decide how and whether he is going to propose to her or not.

When a mystery horse arrives at Heartland, Amy and Ty are sent down a path that will alter their lives.

Amy tries to fulfill Mallory's dream of being a show jumper but discovers that it's Georgie who has the natural talent.