Continuity: At the end of Henry and Laura's conversation in the park, Henry's cone suddenly loses its ice cream.
Continuity: At one point an external shot shows a dawn light. But later the clocks in the ward say it's still 3am.
Continuity: Before she runs to the basement, Laura's chest and neck are completely covered in blood. Once she's in the basement, only her breasts and jaw have blood on them.