Hawaii Five-0 Dead Cops
from Scott Inglewolf
Undercover cops killed on Five-0:
Engaged to be Buried - The cop assigned to keep an eye on the Vidalgo gang gets blown up by a car bomb.
Steal Now, Pay Later - Officer Ralph machine-gunned to death while working undercover in a warehouse.
Death's Name is SAM - George Takei plays Blake, a cop undercover who gets blasted out of the sky with a Surface-to-Air Missile.
The Waterfront Steal - a rare Tom Fujiwara death. He plays Louie Kimura ,, a detective who was also Danno's sparring partner. He gets killed in the line of duty going after a robbery ring.
Dealer's Choice - Blackmail - a cop is run over by a car while raiding a gambling house. He's not necessarily undercover, more like in plainclothes.
Angel in Blue - at the very beginning a, a water skier comes across the floating corpse of a man I believe was an undercover cop involved in a narcotics ring.
Head to Head - another cop undercover gets killed when his cover becomes know. Interesting m it's the same actor who played the killed cop in Dealer's Choice - Blackmail.
A Death in the Family - the tragic episode where Chin Ho Kelly loses his life undercover. Reni Santoni was the killer and McGarrett made him pay.
Stringer - Beau Van Den Ecker again plays the cop, except this time he's in plainclothes with Duke and meets his end in a fiery car crash when one of their tires is blown out. There were tailing mighty mouth Tony Alika.
Voice of Terror - Truck and another cop, pretending to be hikers, move in on the el loco terrorists. Unfortunately, the other cop is too anxious to act and gets blown away for his trouble.
Here's a short list of ex-cops killed:
Rest in Peace, Somebody - Bill Cameron is thrown off the force ad retaliates by trying to kill the governor. His efforts get the governor and Kono wounded and himself killed.
Death With Father - Andrew Duggan is a former cop asked to resign early for his over-aggression on the job. His son went bad and got involved manufacturing drugs. His suicide at the end kills both father and son.
Nightmare in Blue - I have this on both lists, probably due to we the view don't really know if Stark is a real cop, fake cop, or ex-cop until the end.
One more, in a list of his own because he fits none of the other categories
Who Says Cops Don't Cry - Kevin Wilson is to start with Five-0 at the four in the afternoon. Shortly before that he finds himself witnessing a robbery and is killed in the ensuing gunfire. His wife Lori (briefly) joined Five-0 in his place.