Do you believe that he suspected at that moment that someone was in the apartment and had moved the door but he wasn't "troubled in the slightest" and suspecting that this intruder would abduct his daughter, he wasn't" bothered" and " quite happily" left her to that fate?
He noticed when he entered the apartment that the door to the children's bedroom was half open, rather than 10cn open as he'd left it 30 minutes earlier. He Ithought it was 'strange'. He wondered if Madeleine had gone to sleep in his bed to avoid the noise created by the twins. That wasn't the answer, she was in her bed fast asleep in the exact position she had been in when he left her.
I had a similar experience once. I always checked my children when I was going to bed, and one night I found the loft hatdh, which was in my girls' room, open. My husband was away at the time. I didn't go and get into my bed I sleot in that room with my children right underneath that open hatch. If someone was going to come out of the loft I was there to do my best to protect my children.
Gerry went back to the restaurant, even though he had no answer to why that door had moved. According to his wife he told her the children were 'doing well' and also told her he had bumped into Jez. He didn't mention the bedroom door, which he surely would have if he was concerned about it. He wasn't bothered. but he should have been imo.