Any idea what type of corrupt officer Thandie Newton will be?

Apparently she's the 'guest star' for season four.

So far all of the officers DC-12 has gone after haven't been as bad as we suspected.

Lenny James was only into minor league corruption, Keeley Hawes became increasingly crazy but was a good officer with decent intentions, and Daniel Mayes was very messed-up but at least had a sympathetic motivation for the terrible things he ended up doing.