Peaky Blinders

— One man should be here.
— You're right, Pol. Freddie should be here.
— Is that a heartbeat I hear inside that chest?
— The truce lasts until sunrise.

Explanation: 
When Thomas' younger sister was giving birth, Polly asked one of the men to stay, for protection Thomas allowed to call Freddie, the sister's husband, with whom they had a common feud.