Marlowe looked at Trent, who nodded as who should say that his point was met.
'As for Southampton,' pursued Marlowe, 'you know what I did when I got there, I have no doubt. I had decided to take Manderson's story about the mysterious Harris and act it out on my own lines. It was a carefully prepared lie, better than anything I could improvise. I even went so far as to get through a trunk call to the hotel at Southampton from the library before starting, and ask if Harris was there. As I expected, he wasn't.'
'Was that why you telephoned?' Trent enquired quickly.
'The reason for telephoning was to get myself into an attitude in which Martin couldn't see my face or anything but the jacket and hat, yet which was a natural and familiar attitude. But while I was about it, it was obviously better to make a genuine call. If I had simply pretended to be telephoning, the people at the exchange could have told you at once that there hadn't been a call from White Gables that night.'
'One of the first things I did was to make that enquiry,' said Trent. 'That telephone call, and the wire you sent from Southampton
