Episode 1
Episode: 4x01 | Airdate: Feb 10, 2013 (60 min)
Episodes
Episode 2
Episode: 4x02 | Airdate: Feb 17, 2013 (60 min)
Episode 3
Episode: 4x03 | Airdate: Feb 24, 2013 (60 min)
Episode 4
Episode: 4x04 | Airdate: Mar 3, 2013 (60 min)
Episode 5
Episode: 4x05 | Airdate: Mar 10, 2013 (60 min)
Episode 6
Episode: 4x06 | Airdate: Mar 17, 2013 (60 min)
Episode 7
Episode: 4x07 | Airdate: Mar 24, 2013 (60 min)
Masterclass 1
Episode: 4x08 | Airdate: Mar 30, 2013 (60 min)
Episode 8
Episode: 4x09 | Airdate: Mar 31, 2013 (60 min)
Masterclass 2
Episode: 4x10 | Airdate: Apr 6, 2013 (60 min)
Episode 9
Episode: 4x11 | Airdate: Apr 7, 2013 (60 min)
Masterclass 3
Episode: 4x12 | Airdate: Apr 13, 2013 (60 min)
Episode 10
Episode: 4x13 | Airdate: Apr 14, 2013 (60 min)
Masterclass 4
Episode: 4x14 | Airdate: Apr 20, 2013 (60 min)
Episode 11
Episode: 4x15 | Airdate: Apr 21, 2013 (60 min)
Masterclass 5
Episode: 4x16 | Airdate: Apr 27, 2013 (60 min)
Episode 12
Episode: 4x17 | Airdate: Apr 28, 2013 (60 min)
Masterclass 6
Episode: 4x18 | Airdate: May 4, 2013 (60 min)
Episode 13
Episode: 4x19 | Airdate: May 5, 2013 (60 min)
Masterclass 7
Episode: 4x20 | Airdate: May 11, 2013 (60 min)
Episode 14
Episode: 4x21 | Airdate: May 12, 2013 (60 min)
Masterclass 8
Episode: 4x22 | Airdate: May 18, 2013 (60 min)
Episode 15
Episode: 4x23 | Airdate: May 19, 2013 (60 min)
Masterclass 9
Episode: 4x24 | Airdate: May 25, 2013 (60 min)
Episode 16
Episode: 4x25 | Airdate: May 26, 2013 (60 min)
MasterClass 10
Episode: 4x26 | Airdate: Jun 1, 2013 (60 min)
Episode 17
Episode: 4x27 | Airdate: Jun 2, 2013 (60 min)