Complex sentence: Series 4 consisting of five episodes aired from Monday 16th to Friday 20 March 2015 on BBC One, followed by repeats of earlier cases until Friday 17 April 2015.
Split into simpler sentences: Series 4 consisting of 5 episodes aired from Monday 16th to Friday 20 March 2015 on BBC One. Followed by repeats of earlier cases until Friday 17 April 2015.