The stress and overall experience is great. This genuinely feels like a detective game, and could be taken so much further. I'd suggest that instead of limiting the number of rewinds a player can use, limit their rewinds in a more creative way. My suggestion would be to give the player a really short amount of time on the initial sweep, and every single rewind will just be tracing their steps exactly. If their initial sweep is garbage, so will their replays. Force the player to get really good at looking for important details in a short period of time.