'Elementary' Season 2 Premiere: First Look At Rhys Ifans As Mycroft Holmes And Sean Pertwee As Lestrade (PHOTOS)

As the "Elementary" Season 2 premiere (Thursday, Sept. 26 at 10 p.m. ET) draws closer, CBS has released the first photos and an episode description for the London-set return. The episode features Rhys Ifans as Sherlock Holmes' (Jonny Lee Miller) brother Mycroft, and Sean Pertwee as his former mentor, Gareth Lestrade.

Check out the episode description and new stills for "Step Nine" below, and tell us what you're most looking forward to from the new season in the comments!

Holmes and Watson (Lucy Liu) travel to London to help track down an old mentor and investigate an unsolved mystery. Meanwhile, Mycroft Holmes, Sherlock’s estranged brother, reunites with Sherlock and reveals some secrets of his own.

Elementary Season 2