In season four of FX's Breeders, it's been five years since we last saw the Worsley family, caught up in the dramatic events at the end of season three — "Paul" (Martin Freeman) and "Ally" (Daisy Haggard) on the verge of splitting up, "Jim" (Alun Armstrong) and "Jackie" (Joanna Bacon) in turmoil, "Luke" finding a new relationship and "Ava" mending an old one. This season of Breeders brings the biggest parenting challenge that Paul and Ally have ever faced, as 18-year-old Luke (Oscar Kennedy) drops a bombshell at Christmas dinner that will change everyone's lives forever. No longer in Luke's shadow, 16-year-old Ava (Zoë Athena) experiences her own bombshell moment as she meets and immediately falls for the charismatic "Holly" (Jessie Williams). Paul and Ally continue to try, fail and try again as they face these latest parenting challenges, while also having to support the increasingly troubled Jim and Jackie. The 10-episode fourth season is produced by Avalon and FX Productions for FX and Sky. Academy Award®-nominee and double Emmy® Award-winner Simon Blackwell is showrunner. Breeders is created by Blackwell, double Emmy Award and Directors Guild of America Award-winner Chris Addison and Emmy and BAFTA®-winner Martin Freeman, who also stars alongside BAFTA-nominee Daisy Haggard. Executive producers are Blackwell, Addison, Freeman, Jon Thoday, Richard Allen-Turner, Rob Aslett, David Martin, Toby Welch and Michael Wiggs. Kenny Tanner is producer.