You ain't been to court much, I presume likely, Perfessor, so you may not be on to what alibi is.
But he had an alibi all the time, my child; an unanswerable alibi which he preferred to withhold.
All of which made for the impression, fantastic or not, of the alibi.
Did he supply an alibi so neatly because of that shadowy head on the door panel?
McCarren had to own himself ...