After some checking, Shacknews can verify that Outerlight employees have logged over 130 hours on the unannounced game so far.
Outerlight's The Ship is a multiplayer game set on a 1920s cruise liner that challenges players to assassinate their assigned victim before being similarly murdered.
The developer has previously stated that the follow-up to The Ship would diverge from the first title in both environment and name. Hollywood Murder Party sounds about right.
We've contacted Outerlight for comment.