What are the generally accepted rules with dealing with suspicious people as Detective? Defer to security yes? But what if comms are down, and the HoS is nowhere to be found? What if Beepsky handcuffed a ninja(Who had C4, btw)? Pretty sure that's cause for taking matters into one's own hands, yes?
If there's any other Sec at all, they're the ones who are supposed to be doing Sec work. The detective is an investigator. With that said, if you catch a perp in the act (especially on a low-pop round), by all means cuff them and take them to Sec. But a detective who goes around acting as if they're a sec officer is generally going to be received even worse than a HoP who does the same (for a similar reason: if you wanted to be a sec officer, you could have done so). Unless there's an active emergency with criminals running around the station, people who aren't security officers or the HoS shouldn't be patrolling the halls as if they were. Sort of like how the Captain, HoP, RD, QM, etc. might get into Engineering to set up the engine, but only if there are no engineers, not on a regular basis. IMO, in any case.
That's specific to our station, given that most of the other major servers will always have enough pop for a proper sec department, in which case you really
will be investigating full-time.