Double or Nothing

The fifth book of the Double Helix crossover finds Captain Jean-Luc Picard joining forces with Captain Mackenzie Calhoun of the Excalibur to hunt down whoever has spent over a decade seeding the Alpha Quadrant with genetically engineered plagues. Romulans, Cardassians, Bajorans, and the Federation itself have all suffered the epidemics, and with the death toll climbing, the two captains have to run the conspiracy to its source before another world falls. Peter David pairs his Next Generation and New Frontier casts for the confrontation.