BT

When an elusive serial killer leaves no physical evidence, the BAU brings in Y/N—a brilliant civilian specialist who decodes micro-expressions in fractions of a second. Partnered with Dr. Spencer Reid, their unmatched intellects quickly mesh, but Spencer soon faces a variable his logic can't solve: his growing connection to Y/N. As the hunt escalates, reading the truth becomes a matter of survival—and love becomes the one thing he couldn't calculate.