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The hardworking men of Firehouse 51 can't escape holiday drama on Wednesday's all-new episode of Chicago Fire, in which they're accused of stealing a $50,000 diamond necklace after putting out a kitchen fire in an upscale townhouse.

Meanwhile, Dawson (Monica Raymund) invites Casey (Jesse Spencer) to her cousin's elegant Christmas party, while a frustrated Shay (Lauren German) has reached her limit with Severide (Taylor Kinney).

Chicago Fire Stars Simulate Real Rescues

Catch tonight's episode of Chicago Fire at 10 p.m. on NBC.