Sometimes, you just don't have a good time when you go away on vacation. You have to deal with the crowds, the bad hotels, all the tourists at the beach ... the escaped murderers who are out for revenge.

[Spoiler alert.]

On 'CSI: NY' (Wed., 10PM ET on CBS), two detectives leave the city for a simple getaway, but have their plans ruined when killer Shane Casey (Edward Furlong) breaks out of jail. Danny (Carmine Giovinazzo) and Lindsay (Anna Belknap) head to the beach -- and there, the couple are stalked by Casey.

And even when it seems like Casey is dead, the couple still can't breathe easy. In a shocking twist, Casey suddenly returns from a watery grave. Then, he threatens the life of their daughter. This could be the worst vacation ever.