The Scotsmansis the story of a Glasgow detective investigating his own daughter's death in Washington, D.C. Six months after the murder of Catriona Cowan, a Scottish exchange student, her father arrives in D.C. skeptical of the findings of an earlier police investigation. Chic Cowan's own inquiries lead him from the deprived neighborhoods of Southeast D.C. to the townhouses of Capitol Hill and to the suspicion that his daughter's death is connected to an upcoming Senate election. But the obsessed and grieving father, wrestling with sobriety, comes to question his own sanity as he closes in on the truth.