Siamak eventually comes to his senses and goes to the police to confess to his crimes.
But would he tell the police about Mostofi; and even if he does so, would the police believe an addict?
Don’t miss the forty first part of the 43-episode series tonight at 21:00 GMT.
iFilm English TV also repeats each episode of the series the next day at 02:00, 06:00, and 13:00.
The series, produced by Ali Ashtianipour and directed by Saeed Soltani, delves into the complicated lives of two pharmacologists and best friends who run a pharmaceutical company in Iran.
Their strong friendship faces significant challenges due to a conflict surrounding a newly developed anti-cancer drug.
The cast list includes Kamand Amir-Soleimani, Pejman Bazeghi, Parviz Fallahipour, Mehdi Hashemi, Jamshid Mashayekhi, Daryoush Farhang, Mohammad Motevasselani, Zahra Saeedi, and Hadis Miramini.