It began as a problem in one of Holmes' beloved beehives, led to a murderous cult, & ended
- or so they'd hoped
- with a daring escape from a sacrificial altar. Instead, Mary Russell & her husb&, Sherlock Holmes, have stirred the wrath of those they've thwarted. Now they are separated & on the run, & pursued across the Continent by a ruthless enemy with powerful connections. Unstoppable together, Russell & Holmes will have to survive this time apart, & with Holmes' young granddaughter in her safekeeping, Russell will have to call on instincts she didn't know she had. From secret rooms in London to rickety planes over Scotl&, Russell & Holmes work their way back to each other in the most complex, shocking, & deeply personal case of their career.