At the end of the film, a shot of Valerie Hobson staring into a mirror was taking longer than anticipated and was suspended – it was lunchtime – and returned to in the afternoon. Later, some three months after the film had been on exhibition, a cinema-goer asked what was meant by a Chad being reflected in the mirror. It seems that a worker on the film had drawn it on the wall during the break in filming, and it is dimly visible in the final scene behind John Mills' shoulder as he says "I've never ceased to love you when there seemed no hope in my love".