Still recovering from a heart transplant, a retired FBI profiler returns to service when his own blood analysis offers clues to the identity of a serial killer.

Terry McCaleb: Somebody's trying to jerk us all off.
Detective Arango: Well personally, I like being jerked off.
Buddy Noone: This goes on any longer, I want a raise.
Terry McCaleb: How 'bout Workman's Comp?
[last lines]
Graciella Rivers: [about the boy fishing] Poor baby, he's been at it all morning.
Terry McCaleb: Yeah. I wish I could get a big fat marlin and put it on his line.
Terry McCaleb: Remember how you said I was your friend, and I could tell you the truth? Well I don't need you at all.
Detective Arango: This is a run-of-the-mill ordinary convenience store robbery. It's an idiot with a gun and a mask, with the right ratio of balls to brains, pulled the trigger. That's all this is.
Buddy Noone: Who wants to go to the desert anyway?
Terry McCaleb: You go where the clues lead.
Buddy Noone: Don't they ever lead to the beach?
Buddy Noone: We're Cain and Able. We're Kennedy and Oswald. We're shit in the bottom of somebody's shoe.
Terry McCaleb: If you can't protect the integrity of the system, then there is no system.
Graciella Rivers: [about photograph] Why don't you just look at it again, please. Just one more time, and you'll know why. Just tell me if you see anything, feel any thing.
Terry McCaleb: Miss Rivers, I'm a retired FBI man not a psychic.
[first lines]
Detective Arango: [referring to McCaleb at crime scene] Okay, listen. Whatever happens, it'll his face on the front page.
Detective Arango: Just because you got a Mexican's heart doesn't mean you're one of us!
[repeated line]
Buddy Noone: Take a nap.
Detective Arango: Hey McCaleb! We don't need your doughnuts... or your shit! We've got enough of our own!
Detective Arango: "Happy Valentine's day". Way to make a come back. Some people get flowers, some people get chocolates. You get a dead guy.
Terry McCaleb: I prefer the hard line.
Graciella Rivers: So why do you live on a boat?
Terry McCaleb: Because I hate mowing lawns.
Buddy Noone: I'm the following sea, man. I'm the one you need to watch out for.
Buddy Noone: Are you okay, Terry? You aren't looking so good. You oughta take a nap.
Terry McCaleb: Hey Arrango, next time you step foot on this dock, this Mexican will kick your ass!
Jaye Winston: [the heart McCaleb received from his transplant belongs to one of the victims] Conflict of interest. Did that ever occur to you, conflict of interest?
Terry McCaleb: Where you're going?
Buddy Noone: We're going to lean on him, right? You go after him, I pull you off. Good cop, bad cop.
Terry McCaleb: Ah no. You stay with the car!
Buddy Noone: C'mon man, Starsky and Putz.
Terry McCaleb: You guys can... keep the donuts.