On the verge of taking his own life, a detective will have to get back on his feet to investigate the disappearance of his neglected daughter

What if he had been fired from his job, so no resources? Did the kidnapper send him a personal message - ie is her disappearance his fault from an old case? How old is his daughter?? Why is he suicidal - failed job, failed marriage? I think this can work with just more detail.

A washed up divorced detective is forced into retirement until he discovers his estranged 15 year old daughter is missing and the police have no clues.? Maybe? Needs a greater obstacle I think...

Focus on finding the daughter because I guess that it is the main action in the film

THanks for your tips. Appreciate it.