TV HIGHLIGHTS Islands ofWonder, 8PM on Ch. 16 and Ch. 48: Coroner, 9PMon Ch. 26:

55thAcademy of Country MusicAwards, 8PMon

Ch. 7 and Ch. 12: Fifteentime ACMAwardwinner Keith Urban hosts these ceremonies honoring the biggest names and emerging talent in the country music industry, broadcast live from three iconic locations in Nashville, Tenn.: the Grand Ole Opry House, historic Ryman Auditorium and The Bluebird Cafe. Scheduled performers include Kelsea Ballerini, Old Dominion, Maren Morris, Thomas Rhett, Miranda Lambert and Tim McGraw. Among this year’s nominees, Morris earned five nods in four categories, including her fourth Female Artist of the Year nomination. Firsttime ACM nominee Justin Bieber has four nods for his “10,000 Hours.”

This miniseries exploring three of the most exotic andmysterious islands on Earth continues with “Madagascar.” Regarded by many scientists to be the oldest island on Earth, Madagascar has been isolated longer than any other place in theworld. As a result, life here has had time to evolve in unusualways, resulting in more uniquewildlife than possibly any other island on the planet.

In“The Suburbs,” the first of another newtwo-part episode, a victim causes a building lockdown, forcing Jenny (Serinda Swan) to team up with a former colleague. Elsewhere, DetectiveMcAvoy (Roger Cross) pursues a recently released prison inmate, determined that his freedom will be short-lived. Meanwhile, Liam (Éric Bruneau) gives Ross (Ehren Kassam) a handwith his grandfather. Tamara Podemski and Nicholas Campbell also star.