When Agatha accidentally eats a major scientific discovery (hidden in a sandwich!), it's a race against time for twins Agatha and Christie to find out who's trying to ruin physician Sir Alexander Fleming's reputation.
Many are unhappy about Mr Alexander Jr's daring drive to the summit of Ben Nevis, but who is trying to sabotage the record-setting expedition? Willing passengers Christie and Agatha are keen to embark on a rip-roaring adventure, but soon they're embroiled in a thicker plot than they bargained for.
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