FROM THE AUTHOR OF GUESS WHO, READ THE SECOND NOVEL FROM THE NEW KING OF THE LOCKED ROOM MYSTERY.

NOW..

My name is Matthew McConnell. You've probably heard my story.
I took five of my friends on a boat through the longest canal tunnel in England.

YOU...

It takes two hours and twenty-six minutes to travel through that tunnel.
Six of us entered that tunnel but I was the only one to come out.

DON'T...

It was pitch black in there - I don't know what happened to them. But I'm the only suspect.
And if I don't find out how they disappeared, I'll be sentenced to murder.