San Francisco detective Lindsay Boxer calls upon the members of the Women's Murder Club for help when a series of violent incidents puts police on the trail of a killer or killers intent on murdering someone every three days, and the investigation becomes urgent when Boxer learns one of her friends is a target.

On November 4, 1979, Iranian militants stormed the American embassy in Tehran and captured dozens of American hostages, sparking a 444-day ordeal and a quake in global politics still felt today. But there's a little-known footnote to the crisis: six Americans escaped. And a mid-level agent named Antonio Mendez devised an ingenious yet incredibly risky plan to rescue them.