NBC describes "The Devlin Connection" as a "high-style, comedy-action-drama series," but the program, premiering tonight at 10 on Channel 4, is, like a number of the season's new shows, too silly to be taken seriously and too dull to be mistaken for humor.

Rock Hudson returns to series television for this flaky caper, about a former detective who somehow became the director of a Los Angeles arts center and whose long-lost son, also a detective, returns to join forces and . . . blah blah blah. When one gets bored merely from considering the premise of a show, that show is in trouble. The most one might hope for an endeavor like this is that it would be able to pass itself off as "MacMillan and Son," but even that lowly goal is out of reach.

Hudson ambles around amiably enough in nice clothes and gorgeous cars, but "Devlin" seems mired in a consciousness which television left in a ditch years ago (not that any form of inanity might not make a comeback on TV at any time; that's one of the kooky things about this nutty old medium). As his son, Jack Scalia, whose roles previously were limited to wearing sweaters, shirts and maybe even designer underpants on the pages of Gentleman's Quarterly , seems to be trying to perfect a Richard Gere impression, but perfection is a long way off. So long, indeed, that it's extremely unlikely he'll get it down pat before the show itself is pronounced officially kaput.