What's on streaming: "Silo" Season 3, "Enola Holmes 3" and Sharkfest

• Rebecca Ferguson's Juliette returns with memory loss and no idea who or what to trust in this dystopian drama about a mysterious underground society.
• Catch up quick: Critics are calling Season 3 the show's best yet.

"Elle" — Season 1 available now on Prime Video

• This "Legally Blonde" prequel follows pre-Harvard Law Elle Woods as a teenager in the '90s who moves to Seattle.
• By the numbers: The trailer has racked up more than 10 million views since its release, despite mixed early reviews.

"Enola Holmes 3" — Film available now on Netflix

• Millie Bobby Brown is back, and breaking the fourth wall, as the younger sister of Sherlock Holmes (Henry Cavill).
• The latest: This time, the setting is Malta, where Enola's wedding plans get blown up when Sherlock disappears.

"Worst Neighbor Ever" — Docuseries available now on Netflix

• This true-crime series revisits real cases where neighborhood disputes in Kentucky, Indiana and California escalated into harassment, deadly violence and criminal investigations.
• The big picture: It's the latest title in Netflix's "Worst" franchise, following similar shows about dangerous roommates and exes.

Sharkfest — Documentary specials available Sunday on Disney+ and Hulu

• The annual TV event is back for its 14th year with two weeks of National Geographic shark content.
• Zoom in: Shows include "Hammerhead Sharks Up Close with Bertie Gregory," "World's Biggest Mako" and "Shark vs. Giant Croc."

Go deeper: See last week's picks.