When the mayor of Chris and Susan Pratt's home town receives a threatening letter, once again the twins use their cleverness – and their identical appearance – to track down the culprit. But in this sleuthing adventure, the twins' ability to play the role of actress – and to convince people they're someone they're not – rises to a whole new level. #12 of the Pratt twins series. Young Adult Fiction by Cynthia Blair; originally published by Fawcett Juniper