Guardian Assassins - The Collins Twins Series #814671

After successfully executing their first mission as assassins for the Elders, Iceman stumbles upon a chance encounter with Katie O’Brien at an airport bar that sparked an unexpected relationship. Weeks later, during an assigned retreat to Ireland, Kelly Gerrity, Zeus’ love interest and Jack’s cousin, is introduced. Throughout the book the couples manage to have entertaining episodes in the face of the twins’ exceedingly demanding schedule. During the year, the twins are introduced to Dr, Grace Monroe who is a guiding force for the twins and their mental health. 
Assigned to the analytics department, Iceman stumbles upon the Elders’ file on COVID-19. The file, later named the C-Files, is a source of intrigue that grows to obsession for Iceman. The newly formed C-Files team investigates the possibility that China manufactured the virus as a weapon of mass destruction. The team discovers the C-Files were in fact a result of an accident, however the C-Files document the creation and expected deployment of the virus was no accident.