Irrefutable Proof is another '187'.
Notice the suspect is an investment banker. When I began this work, those guys were flying off the roofs of 33 story buildings a dime a dozen.
Notice further, this story comes out of London. London = 74; England = 33
The attempted killing was May 5, 2017?
5/5/2017 = 5+5+20+17 = 47
*Sacrifice = 55
This reader did a good job breaking down the elements of the story.
I don't know about serpent people... but anything is possible.