它可能是今年7月阳光明媚,但是entertainment on tap from the various streaming services has a much darker tone. Gripping documentaries about deadly sharks and mad science make their debuts, as well as a new take on a penny dreadful classic and a long-anticipated horror sequel. Plus, it’s the end of the world (again) on Prime Video. Get ready to shiver despite the heat.

‘Shark Fest’

Disney+ has the entirety of July blocked out for “Shark Fest.” The channel will be running more than 70 hours of new shark documentary programming starting July 2.

“Saved From a Shark” looks into the tales of people who say that dolphins and whales have fought off sharks to save their fellow mammals. “Sharkano” (not to be confused with “Sharknado”) explores why volcanic activity attracts sharks off the coast of Hawaii. “Bull Shark Bandits” delves into the possibility of shark intelligence evolving by interviewing Australian fishermen who have noticed bull sharks using new techniques to steal catches from their nets. The series highlights action shots of sharks in the water, plus rare footage of a bull shark and great hammerhead duking it out.

Watch it:Documentary series. All month starting Sunday, July 2.

‘The Horror of Dolores Roach’

One of the creepiest podcasts in recent history is getting an equally gruesome television adaptation. A modern take on the legend of Sweeney Todd, “The Horror of Dolores Roach” follows Justina Machado (“Six Feet Under”) as the titular character. She went to jail for 16 years on a trumped-up drug charge, then returned to Washington Heights, N.Y., to work as an unlicensed masseuse.

Things spiral out of control when a client propositions her, and eventually she starts selling her murder victims as empanadas with the help of her landlord (Alejandro Hernández). Showrunner Aaron Mark has been involved with this story since he wrote it as a one-woman play, so he’s had plenty of time to perfect it for television.

Watch it:First of eight episodes premieres Friday, July 7, on Prime Video.

‘Bird Box Barcelona’

“Bird Box” was a surprise horror hit for Netflix when it premiered in 2018, so a follow-up was always likely. However, rather than adapting “Malorie,” the sequel to the original novel by author Josh Malerman, “Barcelona” is the first of a series of spin-offs with new characters around the world. Set in Spain, the world is still overrun by monsters that cause suicidal and homicidal insanity if humans look at them. This time, they appear to be changing and adapting.

Almost everything about the production is new this time around, including writers and directors Álex and David Pastor, but it still looks like a taut experience dealing with an unusual premise. Spanish actor Mario Casas stars.

Watch it:Horror. Premieres on July 14 on Netflix.

‘King of Clones’

Human cloning is a science fiction staple, but it’s also a real-world science that people have come uncomfortably close to making happen. One of those, maybe, was South Korea’s notorious Hwang Woo-suk, who is the subject of director Aditya Thayi’s (“Deciphering Indonesia with Cheryl Marella”) new documentary, “King of Clones.” The film chronicles Hwang’s rise from veterinary medicine to superstar researcher based on his claim his team had cloned human embryos. However, that all came crashing down in 2005 amid accusations of falsifying data and embezzlement. It’s a strange chapter in the history of one of humanity’s most ethically dubious scientific advances, and Thayi’s film offers a chance to explore where human cloning has been in this century.

Watch it:Documentary. Premieres on Netflix on July 23.

‘Good Omens’ Season 2

All hell’s a-coming … back. Amazon’s “Good Omens” adapted the fantasy novel by Neil Gaiman and the late Terry Pratchett so perfectly that Gaiman penned a second series alongside radio scribe John Finnemore (“Cabin Pressure). David Tennant (“Doctor Who”) and Michael Sheen (“Prodigal Son”) return as the demon Crowley and the angel Aziraphale. The immortal couple have been quietly trying to make the world a better place for eons despite the wishes of their superiors. After stopping the Apocalypse last season, the two now have to contend with an amnesiac archangel (Jon Hamm) wanted by both Heaven and Hell for unknown reasons. The show will also explore some of Crowley and Aziraphale’s adventures in Elizabethan England and London during the Nazi invasion.

Watch it:Fantasy. All six episodes premiere July 28 on Prime Video.

Jef Rouner is a freelance writer.