There are all sorts of rumors about how the term 420 came to be associated with lighting up a joint, but according to the myth-busting website Snopes.com, it was born in the 1970s at San Rafael High School in California, where about a dozen students gathered each day at 4:20 p.m. to smoke pot.
Mary Surratt was arrested as a conspirator in the assassination of Abraham Lincoln in 1865. Louis Weichmann moved into Mary Surrattâs boardinghouse on November 1, 1864. On December 23, 1864, Dr. Samuel Mudd introduced John Surratt, Jr. to John Wilkes Booth. Booth recruited John Jr. into his conspiracy to kidnap Abraham Lincoln.
Emily Prentiss was a former Supervisory Special Agent with the BAU who joined the team two episodes after Elle Greenaway resigned from the FBI for good. At the end of Season Seven, she resigned from the BAU and later accepted a position with Interpol in London.