One of the saddest aspects of this story is watching Megan and Philip trying to cope with being the foster parents of the Leviathan creature. Both actors are excellent.
According to my notes, Michael storms out of the drawing room after arguing with David over the Wall Street board game. So he has plenty of time to transform and do the heavy-breathing thing on Maggie. Then later, when Roger returns home from work and is talking with David, Michael emerges from the servants' door and eavesdrops for a few moments. So I think the timing works, and we are meant to notice when Michael is there and when he-- isn't.
Philip comes to Collinwood to collect Michael, then frog-marches him back to the shop and tells Megan he thinks Michael has done something to David’s governess. Megan is shocked, shocked at this accusation. You know Michael is capable, Philip argues, but Megan wants to hear Michael’s side. That isn’t necessary, Philip cuts in, you just have to find out what he did to Maggie and where she is now. Michael smiles at Megan and tells her, I didn’t do anything, honest. Philip grabs him and turns him around. Leave Michael alone! Megan tells her husband. He’s hurting me! Michael claims. Philip!!!Megan shouts. I told you to stay out of this! he shouts back at her. He drags Michael to the stairs and actually turns the kid over his knee for the spanking of a lifetime. Don’t you dare lay a hand on him! Megan shouts. If you do, you’ll be sorry! Philip stares at her, then lets him go. Michael instantly rushes to Megan’s arms as if her were a much younger child. She hugs him and strokes his hair. He won’t hurt you, she coos, no one will hurt you. Philip stares at her in utter consternation, then goes upstairs without another word.
This is followed by yet another creepy Michael scene. Michael says, He hates me and will never understand me--and for that reason, we are going to fail. He talks about the cause sometimes, but he doesn’t really believe in it--not like you and I do, he adds as he strokes Megan’s face just as Barnabas did Julia’s, and with the same effect. There is nothing more important than what we believe in, is there? he says. No, Megan replies, mesmerized, there is nothing more important. I don’t think Philip should be one of us any more, Michael says. Megan agrees. You should do something about it, Michael tells her. Wild-eyed now, Megan agrees again. Michael leaves the shop. Megan opens the lid of the shop desk and takes out a revolver. Holding it up, she slowly starts up the stairs........