The Better Sister, on Prime Video

Statistically, most murders are committed within families. The Mackintosh family is especially suspect, since the late husband was a lawyer and the widow is a journalist. Inevitably, they become prime tabloid fodder, because she married her unstable drug-addicted sister’s late ex-husband. Nevertheless, the estranged siblings must work together to save the young man they both consider their son in co-creators Olivia Milch & Regina Corrado’s eight-episode The Better Sister, adapted from Alafair Burke’s novel, which premieres today on Prime Video.

The murder of Adam Mackintosh is real. The break-in was faked. Unfortunately, the circumstances lead Detectives Nancy Guidry and Matt Bowen to Chloe Taylor’s step-son, Ethan. She is desperate to protect him, but, inconveniently, his biological mother Nicky Mackintosh now has custody. Their reunion is especially tense, because Taylor once agreed to sign her sister into straight-jacket-style rehab, to secure her future husband’s sole custody rights. It seemed like the thing to do at the time, but she starts to regret her decision as she learns more about the circumstances of her husband’s first marriage.

Guidry’s resentment of Taylor’s “privilege” makes her happy to focus the entire investigation on Ethan. Awkwardly, his lawyer, Michelle Sanders, shares her low opinion of the sister-mothers, but she has sympathy for their son and she is very good at her job, so they put up with her. She was referred to Taylor by Jake Rodriguez, her husband’s associate, with whom she was on the verge of having an affair. At the same time, he was closely assisting her late husband’s representation of a dodgy multi-national company, whose specialty seems to be constructing soccer stadiums in the Middle East, with suspicious rapidity.

So, clearly there are a lot of motives and conflicts of interest to untangle. Indeed, The Better Sister has several twists worthy of a Gillian Flynn adaptation, but the tone is way, way trashier. At least in this case, the soapy luridness is also entertaining. If you are looking for a hothouse fully stocked with family secrets and sneaky scheming, you will find plenty here.

Jessica Biel and Elizabeth Banks fully embrace the spirit of the material, diving head-first into the angst and melodrama. Similarly, Kim Dickens is one-person snark-factory as unabashedly abrasive and defiantly biased as Det. Guidry. Yet, nobody is more flamboyant than Matthew Modine as Adam’s sleazy, ambiguously villainous, and proudly out boss, Bill Braddock.

In contrast, Gloria Reuben acts like a lonely island of sanity and restraint as the sensible (and understandably disgusted) Sanders. Likewise, character actor Michael Harney is terrific as Arty the doorman, who plays a greater role than many of the elitist characters will expect.

The Better Sister is not prestige television, but it is never boring. The large ensemble cast displays great enthusiasm and absolutely no shame. It could very well hook you, but you might want to pretend you’re watching Kevin Costner’s The West if anyone asks. Recommended as a guilty pleasure, The Better Sister starts streaming today (5/29), on Prime Video.