This week Mark reviews:

Splitsville - When Ashley asks for a divorce, the good-natured Carey runs to his friends, Julie and Paul, for support. Their secret to happiness is an open marriage: that is, until Carey crosses the line and throws all of their relationships into chaos.

Anaconda - A group of friends are going through a mid-life crisis. They decide to remake a favourite movie from their youth, but encounter unexpected events when they enter the jungle.

Underland - This documentary, which is based on the book by Robert MacFarlane, follows explorers into places rarely glimpsed by the human eye: caves, flood drains and underground laboratories.