Watch Batman: The Long Halloween, Part One (2021) HD Full Movie Free on SolarMovie. Watch Batman: The Long Halloween, Part One (2021) online free. Held hostage by the powerful Falcone crime family, Gotham City is rife with crime and corruption. Ad...Held hostage by the powerful Falcone crime family, Gotham City is rife with crime and corruption. Adding to the chaos is the mysterious Holiday killer, who has been targeting the underworld and leaving a trail of terror - and body bags.