The N-heterocyclic ligand in the title compound, [Cu(NCS)(C(15)H(13)N(5)S(2))](n), coordinates to the Cu(I) atom through its pyridine N-donor site, and adjacent metal atoms are bridged by the thio-cyanate ion, forming a helical chain along the b axis. The geometry of the metal atom is tetra-hedral owing to a somewhat long intra-molecular Cu-S inter-action of 2.5621 (9) Å.