Patricia Arquette is not the only reason to watch “High Desert,” a new comic thriller premiering Wednesday on Apple TV+, but she’s the best reason, and all the reason you need.

What may, at times, feel like too much, always stays true to its own kooky vision, and as a showcase for Arquette (who also executive produces), “High Desert” provides an ample spotlight. It won’t be for everyone, but neither is a 75-degree Thanksgiving.

The show might not be everyone’s cup of tea because it demands fortitude. While the early episodes are enjoyable, High Desert shapes itself into a more insightful version over the remaining tightly paced outings.

High Desert’s early aimlessness evolves by midseason into a likable shagginess, warmed by a surprising amount of heart.

There’s lots going on. If you are looking for a calm, measured drama, High Desert is not for you. But Arquette is well cast, and her charisma propels the series through its changes of tone.

That it makes sense at all is down to Arquette, whose powerful charisma draws the whole thing together. ... Otherwise, High Desert is very much a case of style over substance. It looks gorgeous, there is an endless parade of side characters, each brighter and kookier than the last, and the New Agey energy and stupidity of southern California is at least as much a presence as they are. But there is too much going on to allow the viewer to care about any of it other than Peggy herself.

High Desert is barren of laughs, and its tone is as abrasive as a dusty California valley cactus.