Last episode on 02.02.2012: S04E13 (Episode: Red Is The New Black)

Upcoming episodes:

S04E14 @ 09.02.2012: airs in 4 days. (Episode: At First Blush)

S04E15 @ 16.02.2012: airs in 11 days. (Episode: War of the Roses)

S04E16 @ 23.02.2012: airs in 18 days. (Episode: His Thoughts Were Red Thoughts)