The Mortal Instruments: City of Bones (PG-13): Lily Collins stars in this adaptation of Cassandra Clare’s popular young adult novels as a teenage girl discovers she is destined to become a demon slayer.
The World’s End (R): Simon Pegg and Nick Frost reunite with director Edgar Wright ( Shaun of the Dead, Hot Fuzz) for this comedy about five old friends who try to finish a pub crawl they couldn’t pull off as teenagers. Then some really crazy stuff starts to happen.
The Spectacular Now (R): A funny, moving adaptation of Tim Tharp’s novel about a high school party animal (Miles Teller) who falls for a mousy, quiet girl (Shailene Woodley).
You’re Next (R): Paint-by-numbers horror show about a family terrorized by masked killers. Nowhere near as frightening as the trailers make it seem.
In a World (R): Lake Bell wrote, directed and stars in this comedy about a woman motivated by her father (Rob Corddry) to follow his career as the king of movie-trailer voiceovers.
Una Noche (unrated): Writer-director Lucy Mulloy’s drama centers on a group of young Cubans who made a desperate attempt to flee the island and head to Miami.
Delete (8 p.m. Monday, Reelz): Overnight, the Internet turns into a malignant artificial intelligence that melts down our nuclear reactors, detonates our missiles and cruelly erases all our cute-kitten videos. I guarantee you haven’t seen anything like it since 1972’s Night of the Lepus, in which civilization was threatened by giant bunny rabbits,
The Man with the 132 LB Scrotum (9 p.m. Monday, TLC): This is a documentary about a disease called scrotal lymphedema and, well, you can probably guess the rest.
Ghost Shark (9 p.m. Thursday, Syfy): Son of Sharknado! Which, incidentally, airs right before it. I’m guessing the next in the series concerns a shark with scrotal lymphedema.