Who would deliberately lure somebody on to treacherous rocks on the Cornish coast? Somebody is flashing lights from the old tower on stormy nights—and the Famous Five sense danger. But can they solve this mystery safely?
In the twelfth book of the series, Anne makes a comment that she'd rather not have any adventures on this little biking trip to Tremannon in Cornwall. She'd rather just have a jolly nice time. So Julian laughs and suggests everyone just pooh-pooh any whiff of adventure that comes their way. To his surprise the others agree, albeit a little reluctantly. So they all somewhat inadvertantly agree to steer clear of mystery and adventure this time round.