Giovinazzo has signed on for a "major recurring role" as Sid Markham, the head of LAPD's Gang Task Force who forms a close bond with Briggs (Daniel Sunjata), according to USA. Markham is more mind than muscle and uses his ability to read people to build relationships, but is also prone to occasional acts of violence.
Sklaroff will star as Fritz, who has made his living through human trafficking and uses brutal intimidation tactics to keep his "property" in line.
Graceland features a group of undercover agents from the DEA, FBI and ICE who live in a mansion in Southern California.
Season 2 of the USA drama is scheduled to premiere this summer on USA.