Roy's Run (Agents Roy Silva and Sami Baxter-Lindsey International Espionage Thriller Series Book 1)

Financial forensic evidence uncovered by the nascent National Crime Agency (NCA) of UK suggest that Russian Organized Crime elements are joining forces with Mexican drug cartels.
UK’s Prime Minister and the President of the United States (POTUS) agree to develop an international task force to further investigate these suspicions. Ex university track star and undercover DEA agent Roy Silva, returning to duty after a life threatening gunshot wound, is personally selected by POTUS to join forces with NCA agent Samantha (Sami) Baxter-Lindsey to lead this task force.
Investigating, Roy and Sami soon develop a theory that the goal of the Russian/Mexican collusion is to deliver a terrorist attack of 90 Sarin bombs over the US. Complicating their investigation are the dismissive attitudes they receive as they try to alert their leadership that an attack is imminent.
Nursing an intimate grudge against Roy and a desire to punish the United States, the leader of a Mexican cartel delivers a preeminent strike against Roy and the task force, sending him into a tailspin of uncertainty about who can be trusted and what is real and imaginary.
Roy’s self-doubts are amplified when he discovers that the CIA, likely under POTUS’s orders, is following him and his team. Amid this cesspool of lies, deception and terror, with Sami’s help, he tries to stop the terrorist attack. With the clock rapidly ticking away, Roy finds himself in the race of his life.