TV top picks

7 p.m. on ABC Marvel’s Inhumans

The Agents of S.H.I.E.L.D. won’t be back until midseason, but this new show ensures a Marvel-ous time still is had now. Anson Mount (Hell on Wheels), pictured, plays the king of the Inhumans, whose refuge in Hawaii may be not only their own salvation, but that of the entire planet. These first two episodes, “Behold ... The Inhumans” and “Those Who Would Destroy Us,” got a two-week run in IMAX theaters first. Iwan Rheon, Serinda Swan and Ken Leung also star.

7 p.m. on CBS MacGyver

Though they’re unsure whether a Navy SEAL is still alive, MacGyver (Lucas Till) and his cronies head for the Middle East to try to find him as the adventure-series reboot starts its second season with “DIY or DIE.” As usual, our hero has to improvise a rescue through unlikely means — with only a cell phone and a soccer ball to use in this case. George Eads, Justin Hires, Tristin Mays and Meredith Eaton continue as co-stars.

7 p.m. on SHOW

Active Shooter: America Under Fire This new eight-part documentary series explores mass shootings in the United States and the devastating consequences that ensue, incorporating first-hand reports from survivors, families of the victims, witnesses and first responders on the scene. In tonight’s series premiere, survivors and first responders share their memories of the 2012 movie theater shooting in Aurora, Colo.

8 p.m. on CBS Hawaii Five-0

Some faces are missing — those of former co-stars Grace Park and Daniel Dae Kim — as Season 8 of the police-drama revival opens with “A’ole a ’olelo mai ana ke ahi ua ana ia” (Hawaiian for “Fire Will Never Say That It Has Had Enough”). Meaghan Rath joins the cast as a new Five-0 member as the team seeks an arsonist set free from prison by a hacker (returning guest star Joey Lawrence, whose brother Matthew also appears). Randy Couture also guest stars.

8 p.m. on FOX The Exorcist

Some first-season cast members — such as Geena Davis and Alan Ruck — are absent as Season 2 starts with “Janus,” which makes another family the object of a new investigation by Fathers Tomas and Marcus (played by returnees Alfonso Herrera and Ben Daniels). Connected to that probe somehow is a group-home operator (new cast regular John Cho, of the latest Star Trek movies) who’s in a struggle to keep his site open. Li Jun Li plays an investigating social worker.