[Ken Holt 11] • The Mystery of the Grinning Tiger

When Ken and Sandy receive a fan letter from Timothy Crandall, the world's youngest millionaire, they could not know what the future held for them, because of it. Steve Granger and Richard Holt assign the two teens to obtain an interview and photos for Global News. When they arrive at Timothy's mansion in Crag's End, Long Island, the mystery begins. Where is the young recluse and what, if any role, do Ralph Walsh and his assistant Brooks have?

Sandy and Ken theorize that Timothy has been kidnapped and his guardians are hiding the fact, for fear of harm to their young ward. The fact that his regular chauffeur was replaced, adds to their conviction. Following up slim leads, Sandy and Ken locate Timothy in a dingy area of New York City. There, the desperate lad tosses them his grinning tiger amulet, the same kind the boys had mailed him, in appreciation of his fan letter. However, they are captured by Andy and Jerry, the guards of the kidnapped youth. Utilizing Sandy's brawn and Ken's smarts, they escape, only to find Timothy gone.

Clues point to Ice Creek, a desolate area of Long Island. There, Timothy and his governess are found and in dire straits. In a desperate battle, Sandy and Ken triumph and the mastermind is unmasked. Looking back on this case, the boys were amazed that the amulet sent to Timothy, would be vital in solving the Mystery of the Grinning Tiger.