KIRKUS REVIEW
Mystery adventure- but not a murder story, as quixotic Roger Quain acts for his uncle's circus, as escort to a pair of wild black panthers from Rome to Paris, and becomes internationally involved as he aids Mati-Hari-in-distress, Catherine Talbot, agreeing to transport her atom-concerned microfilm cylinders in the collar of a panther. In Switzerland, the train is wrecked and the panthers are released in to the Alps. Working from a small inn as headquarters, a hunting party of polyglot nationality is formed and simultaneous with the suspense-filled panther hunt, is the tracking of Roger and Catherine by persons unknown to them. Well-written throughout, exciting and heartily recommended for the jaded palate.