THE CALCULATING MADAM: Twenty-One Cases of ACP Shruti Baxi

Meet ACP Shruti Baxi — the sharp, chai-loving officer they call the Calculating Madam, because where everyone else sees weeping witnesses and airtight confessions, she sees the one number that refuses to fit. A treadmill still running forty minutes after its owner's heart stopped. A marathon runner whose alibi clocks him faster than the world record. A hotel bolt thrown two hours after the man who supposedly threw it had died. From a glittering Mumbai glass tower to a Goa card room to a grand old Kolkata hotel, people lie to her in every language — but the clock, the scale, the logbook, and the shadow on the floor never do, and someone has to be stubborn enough to listen.

These twenty-one tightly plotted cases — plus the haunting origin story of the one she failed — each turn on a single piece of everyday arithmetic simple enough to follow in your head. The crimes are clever, the violence stays clean, and every mystery hands you exactly what you need to beat her to it. Between the bodies runs a quieter thread: the unhurried, witty regard of a police surgeon who keeps ordering a second glass of tea, too sweet, the way she likes it. Watch for the moment Shruti goes quiet and reaches for the napkin in her pocket — that's your cue to stop, look at the numbers in the room, and see if you can solve it first.