“Palmer” (*** out of four) was an endearing drama about a recently released ex-con (Justin Timberlake) who forms a relationship with a young boy (Ryder Allen) from an abusive and neglected home and tries to adopt him in spite of the resistance from the system due to his criminal past. Moving story takes a little time to get going but Timberlake’s believable performance and a terrific performance from young Allen make it rewarding. Final half-hour is particularly moving. Well-observed and captured by director Fisher Stevens.