Recommended for anyone who fancies a comically gay porn story inspired by Murder On The Orient Express. The Secret Tunnel is another pervy fun whodunit with amateur sleuth Edward “Mitch” Mitchell. This one has a bit more plot and a bit less porn than the last installment, but still quite good. While you cannot take these books very seriously, I can’t help but notice that the book acknowledges that homosexual activities were not just frowned upon, but illegal, in the 1920s historical setting. This is an important point as blackmail plays a role in the murder mystery.