He ticked the items off on his fingers.
"A mysterious man who entered the garden one night and left his footprints in the gravel, and whose visit had a strange and mysterious effect on Rattar. Funny feelings produced in the bosom of the housemaid by the presence of her master. Doors of unused rooms mysteriously locked and keys taken away; said to be old papers inside. Mysterious visit of mysterious man at dead of night to remove the said papers. A ring that couldn't come off the owner's finger mysteriously lost. Mysterious burglary on night of the murder by mysterious burglar who left all windows and doors locked behind him and took nothing away. Mysterious perambulations of his garden every night at nine o'clock by Mr. Simon Rattar."
"Great Scot!" murmured Cromarty.
"I have given you the items in what turned out to be their order of date, but I got them higgledy-piggledy and served up in a sauce of mystery and trembly sensations that left me utterly flummoxed as to how much—if anything—was sober fact. However, I began by fastening on to two things. The first was the burglary, which of course at once suggested the possibility that the man who had committed the crime at Keldale had returned to Rattar's house and got in by that window. The second was the nightly perambulations, which could easily be tested. When Mr. Rattar emerged at nine that night, I
