With next week's ghost festival approaching, scary stories abound and actor Louis Koo Tin-lok has his own to tell from a recent trip to St Tropez in France. Koo (below) was invited by a watch company to visit its factory in Switzerland and design his own watch. On the way there, the 34-year-old and some friends travelled to St Tropez to take part in a yacht race. He said his friends were terrified when they saw a ghost at an old hotel where they stayed. 'Usually, people talk about romantic encounters during their European trips,' he said. 'But we didn't have any. Instead, some of my friends saw a series of weird things at the old hotel we were staying. It nearly scared us to death.' Meanwhile, a photo album of the star, Black and White, will be released later this month. Much of the book was shot in France earlier this year and Koo, an avid photographer, said the book would feature some of his own pictures. He's also publishing his autobiography, due out later in the year.