"But you were having him followed, weren't you?"
"I was. Not quite closely enough, as it turned out."
Fountain looked curiously at him. "Well, now that the poor chap's dead I do wish you'd tell me why you wanted him watched. I never could understand that. Did you think he had anything to do with Dawson's murder?"
"When a man - even a drunken man - forces his way into a strange house and lets off a gun I always think it wise to keep an eye on him," said Amberley.
"I see." Fountain laughed a little. "I wondered whether you'd hit on some dark plot!" He became grave again and said: "Look here, what I really came round for was to ask you about Collins' share in the business. The fellow is naturally a bit worried, because he's got it into his head the police suspect him of having pushed Brown in."
"Oh, I don't think so!" Amberley replied.
"Well, I'm glad of that, for the idea's absurd. Why should he push the boy in? He tells me that he went in after him to get him out. I suppose that's true?"
"I wasn't there," said Amberley. "It looked true enough - at face value."
Fountain knit his brows. "I wish you'd be open with me," he said, a touch of annoyance in his voice. "Collins is in my employment, and I think I've a right to know. Hang it all, first my butler's shot, and then my valet is suspected of having pushed a complete stranger into the river. Isn't it true that he tried to rescue him? Of course, I know you never can believe all servants say, but he'd hardly make up such a tale, would he?"
"Hardly," said Amberley. "No one denies that he brought the body to land and applied artificial respiration."