Travel vloggers Teddy (Supernatural's Osric Chau) and Claire (The Vampire Diaries' Sara Canning) are trying to carve out a career reviewing Airbnb-style holiday rentals, but are currently haemorrhaging subscribers from their channel, SUPERHOST.
However, arriving at a wonderful, out-of-the-way, property in the woods, Claire thinks they might have hit pay dirt thanks to the zealous, over-friendly, nature of their young psycho-pixie host, Rebecca (Z Nation's Gracie Gillam).
As Claire seeks to capitalise on Rebecca's eccentricities, Teddy's mind is more on his plans for a secret proposal of marriage to Claire.
Rebecca, however, has other plans.
With a cast of just four people (horror legend Barbara Crampton turns up as a disgruntled former 'star' of the couple's online show), Superhost is a nice, tight, compact little horror thriller.
Coming in at around 84 minutes, no time is wasted setting up the scenario, nor does it hang around unnecessarily once its story is told.
Written and directed by Brandon Christensen, Superhost certainly taps into the zeitgeist, tackling the hunger for "reality shows", the ubiquity of clickbait, the inherent trust factor in Airbnb rentals (not that it's called Airbnb here, nor is YouTube mentioned by name either... but it's all quite obvious), the evergreen problem of mobile phones in horror flicks, the flaws in modern security technology, and probably much more.
However, the film isn't trying to be preachy or really do anything deeper than tell an exciting horror story that feels fresh and 'of the moment'.
Admittedly, the denouement zinger is rather on-the-nose and predictable, but then again it was the only resolution that made sense given the set-up.
As it's on Shudder and we know going in that it's a horror film, there are no great surprises in Superhost, and it reminded me, in part, of M. Night Shyamalan's The Visit.
At its core, Superhost is fun, little, fast food serving of slasher fun about being in the wrong place at the wrong time.
From the micro-cast, who all bring their a-game, Gracie Gillam delivers the film's standout performance as the host-from-hell, an unholy blend of Norman Bates, Annie Wilkes, and every annoying sitcom neighbour ever.
A joy to watch, as she's clearly relishing her over-the-top role, Gillam is a combination of Fairuza Balk, Saoirse-Monica Jackson, and Sophia Lillis, and I can't wait to see what she does next.
In fact, the boundless - if unbalanced - enthusiasm she puts into Rebecca convinces me that the character could live on in a sequel or two, without the need for the very specific framing device of Superhost.
FILMS WATCHED: 3
NEW TO ME: 3