Solve a treasure hunt book

One murder, a grid of suspects, weapons and locations, and just enough clues to eliminate everything but the answer. There are hundreds, in books and one a day online.

An escape room you can do at the kitchen table: riddles that unlock the next page, and an answer key you are not supposed to open. Journal 29 and the EXIT books are the usual way in.

Cover to cover, not the two you do on a train: a book of nonograms, sudoku, kakuro or logic grids, finished to the last page.

Nine strangers on a sinking ship with bomb bracelets; the escape-room visual novel.

Sixty dead sailors and a pocket watch that shows the moment of death; Lucas Pope's 1-bit mystery.

A dead man possesses objects to rewind deaths; Shu Takumi's puzzle mystery.

Nine people, an ally-or-betray vote every round, and a flowchart you jump around to reach the truth.

Four panels you rearrange like a comic to tell a story; one artist, seven years.