The Altruism Effect

Mastermind Murders Book One

by Kristin Helling

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The Bystander Effect

Mastermind Murders Book Two

by Kristin Helling

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The Carbon Effect

Mastermind Murders Book Three

by Kristin Helling

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The Domino Effect

Mastermind Murders Book Four

by Kristin Helling

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The Idea Man

The Idea Man Trilogy Book One

by Kristin Helling

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The Marked Man

The Idea Man Trilogy Book Two

by Kristin Helling

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The True Man

The Idea Man Trilogy Book Three

by Kristin Helling

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