As Stephen Colbert prepares to bid farewell to 'The Late Show,' he's already booked a gig on the CBS drama 'Elsbeth,' where he'll play a late-night host.

An unnamed staffer at CBS spoke with Fox News recently and shared what they believe may have led to the show being axed. The network has been firm the Colbert decision was purely financial, and is representative of the viewership decline across late night all together.

Elsbeth, starring Carrie Preston, Wendell Pierce and Carra Patterson, is a murder-of-the-week show. It follows astute but unconventional attorney Elsbeth Tascioni (Preston), who utilizes her singular point of view to make unique observations and corner brilliant criminals alongside the NYPD.