"Think again--he told you his story, did he mention any names?"

"One; Elsie Macgregor."

"Good: now do you see a clue?"

"Ah!"--Ronald thought a moment,--"yes, I see what you mean, if Ventin were divorced, Elsie Macgregor must have been joined as co-respondent."

"Exactly," answered Templeton; "I see you've caught my idea; now I can't take up this case, and though I'll have to put it into the hands of the authorities, they are sure to make a mess of it, so if you want to unravel this mystery, you must find out the murderer or murderers of Lionel Ventin yourself."

"I see," said Ronald, pulling his mustache, "you want me to find out the divorce case."

The Captain nodded triumphantly.

"But Macgregor is such a common name," objected Ronald; "there may be dozens of co-respondents called Macgregor."

"Very likely, but what about the sex? The co-respondent you look for must be a woman called Elsie Macgregor.

"Yes," cried Ronald, quickly, "and then I'll find out Ventin's real name."