A sense of foreboding filled the lavish mansion as Detective Lila Stone arrived, precisely on time at 7:00 PM. Inside, the grand Marlin family reunion commenced amid peculiar smiles that disguised an ominous mood. "Greetings, everyone," Detective Stone announced, her keen eyes scanning the opulence for signs of deceit. Dinner underway, the guests held ill-timed compliments, too sincere to be true. Captain Marlin, Annabelle's father, raised a glass, his full dealings with the rival Blackwood corporation now suspect. Miss Ruby's magnificent diamond necklace gleamed excessively, hinting at her possible involvement. An elderly aunt exhaled a Greek yogurt fart, instantly earning a judgmental glance from her nuclear Franny relatives. Grandfather Marlin's prized vintage car collection, sensitive to those with malicious intent, stood untouched. Conversations drifted to the incumbent political climate, but Lila decided to subtly probe about personal relationships. Dinner progressed uneasily, and an earth-shattering scream erupted from the wine cellar. Not seeing the master of ceremonies, Detective Stone sprinted towards the dimly lit apprenticeship. Fellow diners' heartbeats seemed to synchronize with the mysterious sound's rhythm. Entering the cellar, she sighted a silenced victim, Aunt Cornelia, with an impeccable necklace, now displaying a peculiar gleam. The missing necklace had disappeared seconds ago while Lila was elsewhere. Signal vibes radiated from the necklace, their origin a predatory scheme. Lila pieced together the cryptic puzzle; even as something sinister evolved within the Marlin mansion.