Uncover the secret world of The High Table in “Truth Serum,” the latest digital mini-series set in the world of super-assassin, John Wick. The four-episode storyline stars Eddie Jemison (Ocean’s 11, iZombie) as Banks Jenkins, a paranoid talk-show host working to piece together enough evidence to expose the criminal organization behind the events featured in the John Wick trilogy. Integrating behind-the-scenes images and videos doctored to look like found footage, each episode expands on Banks’s conspiracy theory, hinting at the mystique of The Continental and the global reach of the High Table, …