Tech billionaire Odin Reichenbach hires Sherlock and Joan to investigate a personal threat he suspects originated from within his own company. Sherlock and Joan search for a motive behind three seemingly unconnected murders.

Andre Blake, Chris Diamantopoulos, Emma Kikue, Jeff Applegate, Jordan Gelber, Maddie Joe Landers, Nick Rehberger, Phumzile Sitole, Rob Bartlett, Samantha Massell, Stephen Dexter