Le Club des Cinq en embuscade

Disaster! A very contagious flu prevents the Five from spending their vacation at the Villa des Mouettes! Instead, they will have to stay with Professor Lagarde, a scientist as absent-minded as he is grumpy. This promises... But everything changes when, in the middle of the night, a thief manages to break into the tower where the Professor keeps his secret plans. To unmask the culprit, Claude decides to set a trap...