Jonathan Groff Jonathan Groff

Sanaa Lathan and Jonathan Groff have been cast as series regulars for Boss' second season, reports.

The Starz drama stars Kelsey Grammer as merciless mayor Tom Kane in Chicago. Lathan (The Cleveland Show) will play formidable Chief of Staff to Kane's rival, Alderman Ross. Groff, who recurs on Glee, will play a smart new staffer in Kane's office.

Homeland, Modern Family and The Artist Top Golden Globes

Grammer recently won the Best Actor Golden Globe for his portrayal on the freshman series.