. "Large type books"@en . "Large type books" . . . . . . . . "Seemingly with inside help, three men break into the laboratories of Atomic Power Inc., killing three guards and stealing a new formula for the control of atomic fission. However, the intruders are caught on camera, and one of them bears the dark streak of an indelible brand across his forehead - the debtor's mark! Private investigator Jim Carter knows that mark well, but in accepting the case to share the reward money with his informant - he's already marked for death." . . . . "Mystery fiction" . . . "Suspense fiction"@en . "Electronic books"@en . . "Suspense fiction" . . "Tomorrow"@en . "Tomorrow" . . . "Seemingly with inside help, three men break into the laboratories of Atomic Power Inc., killing three guards and stealing a new formula for the control of atomic fission. However, the intruders are caught on camera, and one of them bears the dark streak of an indelible brand across his forehead - the debtor's mark! Private investigator Jim Carter knows that mark well, but in accepting the case to share the reward money with his informant - he's already marked for death..." . . . . "Detective and mystery stories" . . "Large type books" . .