21 - Further Adventures of Jimmie Dale by Frank L. Packard

Revisit the thrilling world of Jimmie Dale, a wealthy playboy whose alter-ego, The Gray Seal, thrives on the adrenaline of cracking safes and leaving his signature gray seal behind, not for loot, but for the sheer thrill. His life takes a turn when hes blackmailed by The Tocsin, a mysterious woman running from her own demons. She ropes him into a series of underworld crimes where he emerges as a protector of innocents. Having escaped both the law and the underworld at the end of his last adventure, Jimmie thought he had put his criminal life behind. But the sudden disappearance of The Tocsin pulls him back into the dangerous world of crime and opium dens. Can he find The Tocsin and once again evade the clutches of the law and the underworld? The Gray Seal rises once more in this intoxicating sequel.