The Gallant Ghost of Gansey the Gangster

Micheal can see ghosts.
One ghost, to be specific: Gansey, the ghost of an early 2000s gangster.
Now, having a ghostly acquaintance who pops in every once and a while to cause trouble is one thing. But having that ghost appear out of the blue in Micheal's dorm room, demanding they go to New York and solve the mystery of his murder is another thing entirely - and not something Micheal wants to be part of. But this time is different. This time, Gansey has also found new evidence surrounding the unsolved murder of Micheal's father, who was killed eleven years ago in the very same city as Gansey's death.
Now in a big city with no one but Gansey for company, Micheal realizes that this isn't something he can solve alone. It's very real mafia business. And if he can't count on Gansey, Micheal is in very real danger.
With the help of a chatty ghost, a burlesque dancer, and an attractive mercenary, Micheal sets out to avenge his father and solve Gansey's murder. Who knows, maybe the ghost will leave him alone if they succeed.
*updates twice a week*