The Domino Pattern

In "The Domino Pattern," ex-security agent Frank Compton and his half-Chahwyn partner, Bayta, are tasked with safeguarding the Quadrail, an essential transportation link in a galaxy fraught with danger. As they fend off the malevolent Modhri collective, a series of impossible poison murders unfolds on their journey to the galaxy's edge, revealing a deeper conspiracy threatening the stability of their universe. This thrilling installment in Timothy Zahn's Quadrail series blends hard science fiction with elements of a locked-room murder mystery.