It can pull you under.

Jack Irish: Black Tide

Jack Irish has no shortage of friends, but family members are few and far between. His wife was murdered by an ex-client and his father is a fading photo on the pubs football wall of fame. So when Des Connors, the last link to his dad, calls to ask for help in the matter of a missing son, Jack is more than happy to lend a hand. But sometimes prodigal sons go missing for a reason... As Jack begins to dig, he discovers that Gary Connors was a man with something to hide, and his friends are people with yet darker and even more deadly secrets.