Lovejoy takes Charlotte to an Antiques Fair at Cambridge, where the elderly Doncaster sisters, who have financial problems, invite him to value their belongings. Lovejoy finds what seems to be a very rare bible, but the sisters' brother, a Cambridge don, opposes its sale. Lovejoy then discovers the bible is a fake and suspects mischief. Meanwhile, Beth's father wants her to leave Lovejoy Antiques for something better.
