Chas, under hypnosis, apparently robbed the post office in the village where the Edgington sisters live. But is he still under some hypnotic power? Meanwhile Tarot has discovered a curious fact about Mathilda Edgington - that she died two years ago!

Tarot, imprisoned in the cellar at Bliss cottage, has found out from the hypnotized Chas that the old ladies plan to kidnap the Commander-in-Chief of British Land Forces, NATO. Mikki escapes to warn the Army authorities, but finds her car surrounded by the old ladies.

Mikki is suspicious when she is refused entry to a small town fete - a fete run by to strange but flawlessly beaufiul girls and an equally beautiful young man. Tarot's interest is only aroused when he discovers that the fete, which makes no charges, gives prizes of valuable equipment.