When his daughter’s rape-homicide case turns cold, a child psychologist gradually befriends a rehabbing pedophile (the prime suspect) to solicit his trust and a confession.

Recluse's polish is an improvement.

But why would a pedophile engage in rehab with the father of his victim? ?Or ever confess?

A child psychologist has to befriend a rehabbing pedophile suspect, to confess to?his daughter?s rape-homicide, after the police fails

This raised more questions than curiosity.
What is a rehabbing pedophile? Is there such a program? Is he in jail? Out of jail? In a mental institute??Is he befriending or (more likely) is he faking friendship with the pedophile?

Lastly, what's going to happen throughout the film? What is the action that the MC takes? Is the film going to be about the MC going on long walks in the park, having a beer or playing golf with the pedophile?
The frase "?gradually befriends?" can mean so many things, but what will it mean on the screen in practical terms? I think the plot is rather thin for a full length feature film.