@Isatis You don't need to ask me whether drop-off went OK. Please assume that it has gone OK unless I tell you otherwise.
Well, that's obviously flawed. I mean, if she and the kids were abducted by Martians, or she drove into a volcanic sinkhole by the Co-op, or she just, on a whim, decided to run away with the circus and take the kids with her (to train as clowns), and their arrangement was to call only if something didn't go okay, then he wouldn't find out till teatime.
Then he'd be under suspicion.
Police sergeant: So you didn't hear from your wife after what should have been the school drop-off?
Husband: No. She only calls me if there's a problem. Otherwise I just assume the drop-off has gone okay.
Police sergeant: Are you telling me that, in the absence of a call from your wife to say that everything's okay, you simply assume that it is?
Husband: Yes! I mean, I don't like it. But she says that's the way we have to do it!
Police sergeant: Oh, she says that, does she? So, it's been nine hours since the supposed school drop-off and there's no sign of your wife and children. Tell me, sir, what do you think might have happened to them?
Husband: Well, I can only assume that, on a whim, she decided to run away with a circus and take the kids with her (to train as clowns).
Police sergeant: Pathetic. ...Book him, Danno.