Every month, streaming services add movies and TV shows to their libraries. Here are our picks for some of June’s most promising new titles. (Note: Streaming services occasionally change schedules without giving notice. For more recommendations on what to stream, sign up for our Watching newsletter here.)

New to Amazon Prime Video

‘We Were Liars’
Starts streaming: June 18

This adaptation of E. Lockhart’s award-winning young adult novel of the same name follows Cadence (Emily Alyn Lind), one of a group of teenage relatives known in the family as “the liars.” (Their parents and their billionaire grandfather, Harris Sinclair (David Morse) called them that because of all of the mischief they got up to and then lied about when they were little.) When one of the summers together at the Sinclair family’s oceanfront estate goes tragically awry, Cadence is left with only vague memories of what happened. She has to piece together the details, with very little help from her bickering aunts or her suddenly and inexplicably aloof cousins. The mystery winds through a flashback-filled story, covering the romances and the regrets of the very rich.

Also arriving:

June 12
“Deep Cover”

June 15
“The Chosen” Season 5

June 25
“Countdown” Season 1

June 27
“Marry My Husband”

New to AMC+

‘Hell Motel’ Season 1
Starts streaming: June 17

In the opening scene of the Shudder series “Hell Motel,” a newlywed couple stops on a stormy night at a remote roadside inn, where they are ritually slaughtered by Satanists. Thirty years later, a handful of true-crime enthusiasts and influencers are invited to the motel to promote its reopening. When the guests start dying in gruesome ways, the survivors have to figure out who among them might be responsible. “Hell Motel” was cocreated by Aaron Martin and Ian Carpenter, whose anthology series “Slasher” paid similar homage to classic horror and mystery tropes. Eric McCormack stars as a creepy celebrity chef, whose snide attitude exemplifies the kind of questionable characters who have gathered at this place, any one of whom could be a potential victim — or a potential killer.

‘Nautilus’ Season 1
Starts streaming: June 29

A reimagining of Jules Verne’s “Twenty Thousand Leagues Under the Seas,” this adventure series has Shazad Latif playing the infamous Captain Nemo. In this version of the story, Nemo has been held in a prison in India, forced to do slave labor in helping to design and build a technologically advanced submarine, the Nautilus, for a tyrannical British mercantile company. When Nemo and several of his cellmates break out of jail and steal the ship, they embark on a mission to the farthest reaches of the seas, to find treasure and infuriate colonialists. “Nautilus” plays a little like an ocean-bound, steampunk “Star Trek,” following a motley crew of honorable outlaws as they explore the unknown.

Also arriving:

June 1
“Dead Silence”
“Insidious”

June 2
“Relative Secrets”

June 5
“The Killer Clown: Murder on the Doorstep”