Explorer, scholar and 19th Century Smithsonian darling Robert Kennicott seemed destined to lead a full and adventurous life. Then, at the age of 30, on an expedition to Russian Alaska in 1866, Kennicott was mysteriously discovered dead by a riverside. Rumors of all colors circulated about the cause of his death, although, it wasn’t until 135 years later, in 2001, that two Smithsonian forensic scientists cracked the case.