Vidya Balan’s left eyebrow does this tiny, slightly jagged twitch right before she lies to a cop in the first act of Kahani 2, and if I'm honest, that micro-expression is more interesting than half the exposition drops director Sujoy Ghosh relies on to keep the machinery moving. It is a small thing, but it bugged me how often the script had to explain things that Balan had already communicated entirely through the posture of her left shoulder when she opens a refrigerator door in a dingy Kalimpong apartment. Hindi movies have an old habit of treating the audience like we've just wandered in from the lobby during the interval, which means even when Ghosh is trying to construct a tight, fog-shrouded thriller about missing children and falsified identities, he occasionally stops the train to hand out pamphlets. Five years after the original film caught everyone off guard by making a pregnant woman hunting her husband through the streets of Kolkata look like an urgent, necessary piece of cinema, this sequel arrives with a different set of gears, some of which are slightly stripped before the opening credits even finish rolling.

The plot kicks off when a young girl named Mini is snatched from her wheelchair outside her home, leaving Vidya Balan's character, now going by the name Vidya Sinha, running frantically into traffic before getting hit by a truck and slipping into a coma. Enter Arjun Rampal as Sub-Inspector Indrajeet Singh, a cop with a bad back, an estranged wife, and enough tired cynicism in his voice to suggest he’s read every police procedural ever written and found them all slightly disappointing. Rampal plays most of his scenes at half-mast, which actually works for a character whose superior officer treats him like a nuisance; he doesn't bark orders so much as he sighs them into a mug of lukewarm chai. The film spends its middle stretch bouncing between hospital bedside vigils and Rampal rummaging through old photo albums, uncovering a past life involving a dead sister, a sketchy orphanage, and a series of diary entries that read like a psychological thriller paperback picked up at a railway station kiosk. It is all very standard stuff for mid-budget thrillers that want to be taken seriously by people who usually turn their noses up at mainstream Bollywood. The trouble is that Ghosh and co-writer Suresh Nair keep giving Arjun Rampal lines that sound like they were translated from a Swedish noir via Google Translate, forcing the actor to sell dialogue about the darkness inside the human soul while standing in a police station with terrible fluorescent lighting that makes everyone look like they have hepatitis.

Then there is Jugal Hansraj, whose casting as the oily, predatory uncle is the kind of bold, left-field choice that makes you lean forward before you realize he is basically playing a sketch of a villain rather than a person. Hansraj doesn't chew the scenery so much as gum it aggressively, wearing sweaters that look like they cost five hundred rupees and smiling with his teeth while his eyes stay completely dead, which is effective for about ten minutes before you start wishing the film would just let him be quiet for a change. The supporting cast is largely populated by actors who seem to have been cast based on how convincingly they can hold a clipboard or look concerned while standing in a doorway. The cinematography by Tapan Basu deserves better than some of the digital grading slapped over it during the grade, particularly in the exterior shots of Kalimpong where the mist rolling over the hills actually feels damp and heavy, unlike the air-conditioned soundstages of most modern Hindi films that always smell faintly of fresh paint and desperation. Basu uses long lenses to trap Balan in the frame, making her look smaller and more vulnerable even when she is holding a gun with a grip that suggests she knows exactly how much recoil to expect.

What keeps Kahani 2 from sliding entirely into standard-issue straight-to-streaming filler is the way it handles the trauma of its central character without turning her into a symbol. Vidya Sinha isn't a avenging angel or a broken doll; she is just a woman who has built a fortress out of lies because the truth has a habit of getting people killed. When the flashback sequences kick in, revealing the horrifying reality of what happened to the young girl and her aunt in a sprawling, decaying mansion that looks like it hasn't seen a coat of paint since the British left, the film briefly touches on the kind of institutional rot that makes movies like Ankur feel more relevant now than they did in the nineteen-seventies. There is an ugliness to the abuse depicted here that avoids the slick, music-video aesthetic usually associated with mainstream pictures about child abuse, though Ghosh still can't resist cutting to a dramatic string swell every time someone opens a heavy wooden door. It’s a shame the editing room didn't trim about fifteen minutes from the middle, because every time the narrative momentum starts to gather real speed, we have to sit through another conversation between Rampal and his annoying boss about protocol and jurisdiction.

By the time the climax arrives in a dilapidated factory where everyone is running around in the dark with flashlights, the film has largely abandoned the psychological grey areas it spent the first hour exploring in favor of standard action-thriller beats where people get thrown through drywall. The final confrontation between Balan and the villains is loud, predictable, and lit so darkly you sometimes can't tell whose arm is whose, a classic crutch for directors who want to hide the limitations of their stunt choreography behind flickering bulbs and pouring rain. Yet even in those rushed final moments, Balan manages to inject a streak of genuine desperation into the proceedings, screaming not with the practiced rage of a movie star but with the ragged, ugly sound of someone who has run out of places to hide. It is not a great film, and it doesn't need to be; it’s a reasonably sturdy, occasionally clumsy genre exercise that relies almost entirely on the fact that its leading lady refuses to phone it in even when the script gives her dialogue that would have made a soap opera writer blush.