Home > J.A. Jance > Improbable CauseImprobable CauseAuthor: J.A. JanceSeries: J.P. BeaumontUpdated April 2, 2026J.P. Beaumont #5Improbable Cause (1988)Improbable Cause is a 1988 book by J.A. Jance and is book #5 in the J.P. Beaumont series.Check Price on AmazonGenres Book 5, Books Related PostsDark in DeathInJ.D. RobbWitness in DeathInJ.D. RobbThe Under DogInAgatha ChristieThe Secret of ChimneysInAgatha ChristieBlown AwayInStuart WoodsFinally MineInLucy ScoreRogue / Dark Eyed DevilInOlivia HayleThe Hound of DeathInAgatha ChristieThe Adventure of Johnnie WaverlyInAgatha ChristieFramed in DeathInJ.D. RobbFestive in DeathInJ.D. RobbWhite CargoInStuart WoodsThe Nemean LionInAgatha ChristieThe Big A.S.S. PartyInCaroline Peckham / Susanne ValentiThe Unexpected GuestInAgatha ChristieThe Witness for the ProsecutionInAgatha ChristieLeave a ReplyCancel ReplyYour email address will not be published. Required fields are marked * Name * Email * Add Comment * Post Comment