the prisoners movie explained

Frank had been adopted by his foster parents who doted on him dearly. But everything changed the day his foster parents officially recognized Timothy, their biological son. No matter how earnestly Frank explained, his adoptive father chose to believe the newly acknowledged heir over the son he'd raised for over twenty years. Frank had overlooked the bond of blood. On Timothy's birthday celebration, Frank died in a car crash. In his final moments, Frank realized the entire tragedy had been orchestrated by Timothy. Consumed by regret and rage, his world plunged into darkness. When he opened his eyes again, he found himself back to the fateful day, his wife’s leap from the building.

When her family was facing big trouble, Stacey Sanchez had no choice but to break up with Smith Gilbert and choose to marry Zayne Harris. Then, when she decided to divorce Zayne and got into a fight with him, to protect the baby of her and Smith, she accidentally injured Zayne and thus ended up in jail. Five years later, after getting released from prison, Stacey came across Smith who had returned to the country.