Finding the real killer

The three-night documentary series “Is O.J. Innocent? The Missing Evidence” theorizes that O.J. Simpson was protecting the real murderer: his son. Go ahead and raise your eyebrows, but investigator Bill Dear’s somewhat plausible theory is worth hearing out, especially when buoyed by fresh interviews with key players. Martin Sheen brings weight to the case simply by narrating.

8 p.m. Sunday, Investigation Discovery

Support staff

“Obama: The Price of Hope” boasts plenty of A-listers, including the Big Guy himself, but the most insightful reflections are offered by deputy staffers, non-flashy congressmen and others who aren’t household names, a reminder that history is often best told by those just left of the spotlight.

7 p.m. Sunday, National Geographic Channel

Game of thrones

If “Victoria,” a new offering from “Masterpiece,” earns half the praise that Netflix’s “The Crown” is getting, Queen Elizabeth may have to share the throne. “Doctor Who” veteran Jenna Coleman (left) stars as the 19th century teen queen who may have been the first person ever to make a joke about Prince Albert in a can.

8 p.m. Sunday, TPT, Ch. 2

All we have to fear

The narrator in “Lemony Snicket’s A Series of Unfortunate Events” spends an absurd amount of time warning kids about this comedy’s dark content, all but assuring that they’ll finish their vegetables to binge-watch it. Nothing wrong with that. The story line, in which orphans are tortured by a maniacal actor (Neil Patrick Harris under layers of makeup), may seem dangerously dark, but author Daniel Handler knows a proper scare is part of a healthy childhood, especially when it’s interpreted by a kooky genius like director Barry Sonnenfeld.

Now streaming on Netflix

Neal Justin