DUBAI: While Apple’s Australian thriller miniseries “Last Seen” deals with familiar tropes — a missing young girl; an investigator struggling with alcoholism and the breakdown of his marriage; the hidden darkness behind the friendly façade of a rural community; and more — it handles them all so well that it actually feels fresh. Credit then, to Kris Mrksa — creator of the series, which he adapted from Ryan David Jahn’s novel “The Dispatcher,” director Christian Schwochow — who makes the landscap