From 1984: The Target novelization of the legendary KNIGHT RIDER episode TRUST DOESN'T RUST.
Legendary? It's Michael and KITT's first encounter with the infamous KARR: the first-season evil "twin" episode (there's a sequel in the following season) that's the episode that everyone (along with the Hoff's double-duty as the evil Garth Knight) remembers thanks to the playground buzz it created way-back-when.
With the distance of thirty-odd years (gosh), it's clear that it's not the greatest hour of TV ever shot... but, like much of the series, it's still a lot of fun.
I've not read the book yet (it was cheap online... so I had to have it) but I imagine there's a heck of a lot of padding to bring a single TV script up to full book length. The usual formula was to run two adaptations back-to-back in each book. One clue might be on the back cover: Counter-intelligence in Vietnam. That sounds like a bit of Michael Knight's (actually Michael Long... it's a - ahem - long story) backstory that the show didn't mention much... if at all. Being a Vietnam vet was compulsory for Eighties action heroes... but I'm not sure if Knight/ Long was even old enough to have had fought in 'Nam considering fighting ended a decade earlier. Maybe I'll have to just read the book...