Intervention is a series of Christian mystery/suspense novels by American author Terri Blackstock. As one can divulge from the title, the series deals with drug abuse (of teenagers, in particular).

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Terri Blackstock is an American author who writes romance novels and mystery/suspense novels for the Christian market, which she’s been writing for ever since she had a spiritual awakening. Blackstock gained fame when she co-authored the Seasons series with Christian activist Beverly LaHaye. Blackstock has also written under the pen names Terri Herrington and Tracy […]

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