The Turkish Detective

In a poverty-stricken neighbourhood of Istanbul, a serial killer appears to be targeting rubbish collectors. With Ikmen on leave looking after his new baby, Ayse leads the investigation instead, and Suleyman finally entrusts her with the secret she's suspected for so long.

With his family still growing, Ikmen decides it's time to grow up a bit and seek promotion. Suleyman goes undercover as a rubbish collector to try and find the killer before they strike again, while Ayse turns to an unlikely old acquaintance for help.

When Ayse and Suleyman are sent to investigate a house fire, all seems innocuous at first, but they soon turn up a clue that may break new ground in Suleyman's search for Kayra Khan.

They're even more surprised when the person who blocks them investigating it is the new chief inspector - Ikmen.

The team finally learn who is behind Kayra Khan, but bringing them to justice will be tough on everyone. Chief inspector Ikmen faces an uphill struggle to convince his superiors to commit to his plan.