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Miraj's Dhanmondi Lake murder investigation stalls until a past link emerges, revealing a mysterious connection.

Miraj's investigation into Faria's death reveals an affair, pregnancy, and a suspect, while the arrival of a mysterious figure adds complexity.

Miraj battles Shehzad's nonsensical statements, seeking evidence. A retired officer's claim about Shehzad in 1968 intrigues Miraj.

Miraj's search for the former caretaker is thwarted by his disappearance and the Shehzad case, leading to his suspension.

Despite suspension, Miraj persists, bringing Shehzad from jail. Shehzad's serum reveals his ability to time travel.

Miraj and Shehzad retrieve Faria's sample from the past, intending to revisit the murder night, defying Jahangir.

Jahangir tries to stop Miraj and Shehzad as they travel back to the murder night, identifying the killer but encountering new mysteries.