I've been playing and am currently after the second Annabelle model painting.
So, first off, where do the maids sleep? Are they live-ins? There's no room for them. Because the blackmail happends odd hours and supposedly they shouldn't be around if they aren't live-ins.
Secondly, the MC is a security expert but has done almost nothing so far to use said expertise other than to find the corridors. Every time he's blackmailed afterwards he's just sitting there on his room pondering the ramifications of each new task, instead of I don't know, rushing to the basement since there's apparently only one exit!? Or going to the mall for some spycams or sth and putting one next to the storage unit door? Instead he's just sitting back, twiddling his thumbs and getting stressed over losing his job even though at first he was thinking about who is blackmailing him and why. He also thought there were hidden cams, but he doesn't check for them. I suppose finding the peeping corridors is enough to dispel the hidden cam theory but still, prior to that, there was no inspection attempt. Security expert and bodyguard are not the same. Also it's funny to me that he's hired as security expert, lives in the same house, yet when he goes into Madeline's room, he can't find an excuse other than "I want to talk to you". How about knowing the layout of the house in case of emergency? That should have been an easy excuse for someone of his line of work.
Thirdly, he does find the previous Maid leaving odd, but never attempts to figure it out. We time skip so much, we could have gone out and found out things about this instead. Or perhaps try to spy on Kate a bit more. I guess this might be sth for a future update, but it's a bit wasteful to know about Kate so early, yet be able to do nothing than spy on her in any room without any new clues. Not to mention, the fact that you only find her snooping through your stuff so late in the game instead of the beginning, right after you move, makes no sense as well. Unless she goes through them all the time, but you just don't chance upon it anymore after the first time you catch her.