The Language of Bees(Mary Russell Mysteries‪)‬

In a case that will push their relationship to breaking point, Mary Russell must help reverse the greatest failure of her husband Sherlock Holmes's past - a personal defeat that still has the power to sting. From suicides at Stonehenge to a bizarre religious cult, Russell will find herself on the trail of a killer more dangerous than any she's ever faced - a killer Sherlock Holmes himself may be protecting...