"It could really be about death, and sex and taxes and everything that makes it so weird and wonderful to be alive," Burns said.

Burns, 51, initially rose to fame while hosting Nickelodeon's "Blue's Clues," a mystery show for preschool-aged kids, from 1996 to 2002.

Burns, 51, initially rose to fame while hosting Nickelodeon's "Blue's Clues," a mystery show for preschool-aged kids, from 1996 to 2002.

It increasingly seems like Blue Prince contains puzzles that will never be solved, an incredibly gutsy way to convey a powerful emotional impact.

Crime fiction and screen adaptations have long gone hand in hand, from Slow Horses to Karen Pirie – now Mark Gatiss and ...