When his beloved only daughter goes missing millionaire entrepreneur Walter van Dam calls in a
team of experts - including free-climbers a geologist a parapsychologist even a medium - to
find her . . . for Anna-Lena has disappeared somewhere within a mysterious cave system under
the old house the family abandoned years ago. But the rescuers are not the only people on her
trail - and there are dangers in the underground labyrinth that no one could ever have
foreseen.In a gigantic cavern the team come across a number of strange doors three of them
marked with enigmatic symbols. Anna-Lena must be behind one of them - but time is running out
and they need to choose quickly. Anna-Lena is no longer the only person at risk.Who could have
imagined that the portal marked with ! would take the rescuers into a different time
completely: it is now the early Middle Ages - and they are about to find themselves in the
middle of a world-changing battle . . .DOORS: THREE DOORS THREE DIFFERENT ADVENTURES. WHICH
DOOR WILL YOU CHOOSE?