The action-packed “Friday Society” book trailer

According to Friday Society author Adrienne Kress:

Gotta love Bartitsu, invented at the turn of the 20th century by Edward Barton-Wright. He travelled the world, spending much time in the Far East, returning to England to create a mixed martial art and method of self-defence for ladies and gentlemen using, amongst other props, canes and parasols.

I have Bartitsu in The Friday Society — though I never actually call it by name.