A few weeks later, at an exclusive Gotham club for the wealth in which Bruce Wayne and Mortimer Drake are both members, a visiting scientist revealed that he had recently acquired an original prototype of a typewriter he had invented, worthless to anyone else but a priceless memento for himself.  Hearing this, Mortimer Drake was inspired to again assume his kleptomaniacal identity as the Cavalier to steal the prototype.  Tripping an electric beam, the Cavalier was quickly confronted by Batman and Robin and the ensuing melee, a bottle of blue dye was smashed in the villain's hand.  The struggle between the three was interrupted by a group of more serious criminals after the scientist's more valuable works and they join forces against the new arrivals.  The criminals gain the upper hand and leave all three bound while the search the lab.  Escaping, Batman and Robin defeat the burglars but the Cavalier slipped away.  The following evening, Bruce Wayne notices that Mortimer Drake has a stain from blue dye on his hand and realizing that only club members knew about the prototypical typewriter, deduces that Mortimer Drake is in fact, the Cavalier.  The following evening, Batman and Robin stage a trap for the Cavalier, luring him in with a false lead that the prototype he stole is the wrong one.  When he enters, the two heroes confront the Cavalier and reveal that they know his true identity, causing him to flee.  Batman and Robin race to Drake Manor, to find a note saying that while his true identity is compromised, the Cavalier has escaped to fight another day (Detective Comics #89).

    Around Christmas of 1944, Drake needed some maneuvering room to continue to indulge his identity as the Cavalier.  He used his disguise skills to create the identity of Albert Foster and sought out members of the underworld for his next plan.  Using the cover of a high-end masquerade ball, Drake and his criminal colleagues all appeared as the Cavalier and when they suddenly declared their intention to rob the place, Batman and Robin (in attendance in the true identities) could not identify Drake, who escaped out the back with kidnapped Robin.  Setting a death trap, the Cavalier consumed Batman's time with his most brazen crime yet - the theft of a living whale which ended to ransom for a thousand dollars a ton.  Having freed Robin, the Dynamic Duo corner the Cavalier and his gang red-handed with the whale and captured them all, finally including Drake himself.  He was promptly handed over to the police (Batman Vol. 1 #26).

Whether Drake ever served jail time or had further excursions is unknown. By the 1980's, it was said that the elder Drake had "long since paid it debt to society" and was retired his country home to live out his days in peace (Who's Who Vol. 1 #4) .  Whether he is still alive is unknown.