Underground
Haydar Ali avenges his family's murder and ends up in prison, where he falls into the orbit of Turkey's most dangerous crime cartel. Recruited by intelligence to dismantle it from within, he must earn the trust of its ruthless boss — a man who becomes his closest ally. Three years later, freedom brings the deadliest complication yet: the woman he never stopped loving is now that same man's wife.

Season 1 · Episode 4 ·
Episode 4
While Bozo is in custody, discussions about leadership within the family intensify. Merdan puts his own plan into action, and Haydar Ali decides to take control once and for all. The secret message sent by Bozo, citing four names linked to the betrayal, completely changes the balance of power. At the same time, a shadowy business network with connections in Malta emerges. On the police side, covert maneuvers conducted through lawyers make the confrontation in the underworld even more complex. The major turning point occurs when Ceylan, alongside Gülsüm, goes to Azize's house and openly declares war: "Since you started this war, you will face the consequences." Amidst love, loyalty, and the s
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Episode 4 of season 1 of Underground: “Episode 4”. Aired 2026-02-18. Watch it online free on ZapFlix.