I always enjoy Marston's Railway Detective adventures; he obviously knows exactly how the mid-Victorian railway system worked and is good at getting across a sense of place... Signal for Vengeance is both historically accurate and a terrific read, sure to appeal to Marston's many fans., His stories are traditional whodunits, with little gore, and reveal a sharp ear for dialogue; the focus is squarely on the plot. Marston's engaging tales are informed by a strong sense of atmosphere and attention to detail, and will appeal to readers in search of challenging puzzles in well-told stories set in an earlier time.