|Cause of Death||Shot in the head by Charles Barosky|
|Faction||Stockton Police Department|
|Portrayed by||Tony Denison|
- "I'm not a liar!"
- ―Desmond to Charlie Barosky
Desmond Harnigan is a member of the Stockton Police Department and a pawn shop owner who was believed to have been the one that tipped off the Chinese about the location of SAMCRO's guns at the warehouse.
Barosky suggests that SAMCRO pay a visit to Harnigan when they bring up that Barosky and his men were the only one outside of SAMCRO who knew about where their guns were located (as Barosky doesn't trust Harnigan and he was the one on port patrol at the time of the break-in). After Tig threatens to shove a flute up his ass when he is uncooperative, Harnigan tells them that someone called him and offered to pay $2,000 for Harnigan to avoid going on port patrol the previous night. Barosky, however, doesn't trust that someone that Harnigan doesn't know called him out the blue and happened to get his number. As the two argue back and forth, Barosky shoots him in the head, believing that he is lying. ("Some Strange Eruption") Although it is likely Barosky actually killed him to cover the fact he (Barosky) had informed to Lin. It can even be assumed that Barosky was the person who supplied Harnigan's phone number to the Lin Triad.
|Season 7 appearances|
|"Black Widower"||"Toil and Till"||"Playing with Monsters"||"Poor Little Lambs"||"Some Strange Eruption"|
|"Smoke 'em if You Got 'em"||"Greensleeves"||"The Separation of Crows"||"What a Piece of Work is Man"||"Faith and Despondency"|
|"Suits of Woe"||"Red Rose"||"Papa's Goods"|