Halloween night. A night filled with fancy dress costumes, candy, screams and blood. And then there’s the ‘trick-or-treaters’.

Attempting to recover from a recent family trauma by escaping into the woods for a peaceful hiking trip, an ex-lawman and his young son stumble across a dangerous contract killer.

Michael Collins plays a crucial role in the establishment of the Irish Free State in the 1920s, but becomes vilified by those hoping to create a completely independent Irish republic.