“CSI” (9 p.m., CBS): She might be the hottest thing on the music charts, but can Taylor

“CSI” (9 p.m., CBS): She might be the hottest thing on the music charts, but can Taylor Swift act? We’ll find out on “CSI,” during which she plays a teen who is questioned in a trio of murders at a seedy motel.

“ER” (10 p.m., NBC): The final season of “ER” continues to heat up as a documentary film crew arrives to chronicle life at County General. Think of it as “The Office” with more blood and less zaniness.