Well if you wanted a lie detector...
I imagine there'll be at least one 'fakeout' where she sees images of torture but they're just intrusive thoughts/the person in question hadn't actually done anything (then again, she did say she gives ppl a '3 strike' rule). Maybe she'll save someone who's contemplating suicide too but that's a bit diff than 'punishment' if that's all she cares about
Gonna be real disappointed if it turns out the husband did it. Although at least it would be a fuck-you to lie detector test believers.
He was literally sleeping with another woman at the time? even if he or the lady he was having an affair with had 'motive', it'd probably be like done by a hitman (although idk if Spica-chan would kill the person doing the hiring too), and at the park the kid staring didn't seem to recognize the person (unless we'll get another POV later with the reveal, b/c other than extreme and being an arsonist, it'd be easier for a husband to poison his family versus being violent in a public park [although other than in a deep forested area or so or them being knocked out before being burned you'd think the screaming/smell of smoke would alert /some/ ppl versus the husband conveniently being the first to discover it])
Feels a little contrived that the detective was following the suspect who just happened to be gleefully watching video he took while committing the crime, so naturally the twist is that isn't what actually happened.
Wouldn't be surprised if it was 'projection' and the detective saw what he wanted to see or him 'awakening' to a sadistic/messed up side, if not "well my marriage was falling apart anyways so i feel 'relieved' someone took care of the problem for me", or maybe "Since i was harassed/accused , even tho i wasn't charged, it still ruined my life/reputation and made me go crazy" to where he ended up strangling someone else (if it's the same person she 'bumped' into last chapter)
Maybe she’ll be the last missing piece for him to solve this case…by kinda cheating.
Although the Lie Detector part felt pretty silly, is it admissible in Japanese court?
As far as i know, the lie detector is more of a heart rate measurement, so i wonder if it'd read as 'off' if you had like low blood pressure. Although i imagine the standard would be to "tell a lie on purpose' to get a measurement but after being told that feels like ppl could adjust themselves, or if someone was telling the truth but actually 'distraught' and charged for that or so
(also minor nitpick, idk if it's maybe b/c the container is complete white but that coffee container looks a bit weird/off unless it's not clear and has some kinda hidden drug in it lol)