Summary: (4/5 stars) Into the Drowning Deep is a monster thriller novel with the pacing of a movie and reminds me a lot of Michael Crichton’s later work.
The basic premise is that a big, scientific ship is going to the Mariana trench to do some marine research. Some of the people on the ship are going to investigate the deaths of all the people on another ship that went there seven years earlier. Some of the investigators believe that the other people were killed by previously undocumented sea monsters that everyone calls mermaids.
Spoiler alert: a buncha people die. It’s fun!