In making old-soul Charlie a citizen detective, Johnson and Poker Face have broken from the traditions of shows like Luther. Instead of using fingerprints and case files, she makes the most of all the technological tools at her disposal - whether it's wrapping her head around how security X-ray machines work or how a nursing home heart rate monitor measures a pulse.
Poker Face's approach to tech is an interesting prism through which to view its approach to the crime-solving genre as a whole, given that Charlie isn't a police officer so has to take an off-beat approach to these murders.
