Shows like Suspect

If you want something with Suspect's blend of parental grief twisted into obsessive investigation, you'd likely connect with Before We Die or Bad Detectives—both track how personal loss warps detective work into something dangerous and morally compromised, driven by the need to protect or confront someone close rather than purely pursue justice. Dead and Buried or DNA might work too if you're drawn more to the methodical unraveling of a closed case and the uncomfortable truths that emerge when investigators can't separate professional duty from family trauma.