A thriller about the trials of a gawky, geeky mathematician who might be able to ruin modern cryptography? Bring it on! Prime Target offers a pleasing plot unfurled (perhaps in a slightly leisurely manner) over eight episodes, workmanlike acting (Leo Woodall “works” as the squinty, hapless “genius” maths guy but fails to spark, while the other star, Quintessa Swindell, is sparkier as the super hacker), plenty of touristy eye candy from around the world, and enough plot twists to hold attention. If the music is insipid, if the depiction of the central mathematics ideas is overegged … well, we can’t have everything. Prime Target is “meh” television that plays the role it seeks, and if the central idea holds any appeal to you, I can cautiously recommend it.