Cryptobyte

Truck hijackings, missing families, stolen chemicals, distinctive photographs, cryptic text messages, an unimaginable hobby, and a friend with a curious dilemma.
Life is never straightforward for FBI Special Agent Ellie Iverson and the Delta teams. Juggling twin toddlers and a new position as Special Agent in Charge of Delta, Ellie answers a request for help from a Missouri police officer which calls into play her extraordinary skill set and arrant determination to find the truth and protect the vulnerable.