Considering the convoluted, twisty-turny, time-jumping nature of the overarching Saw narrative, it's a shame that Danny Glover never returned as obsessive cop David Tapp.

His instincts may be slightly off target (he initially suspects Dr Gordon of the 'Jigsaw Murders'), but his investigations still turned out useful, as he ended up saving Gordon's hostaged wife and kid from a sticky situation.

How Easy Is It To Achieve? Well, Glover only appeared in the first movie (Tapp made an appearance in a spin-off videogame), so most of the time he's not actually around to offer his help.

If You Really Can't: Then make use of one of the other 'dogged' officers of the law that pop up throughout the series, including Rigg (Lyriq Bent), Perez (Athena Karkanis) and Strahm (Scott Patterson).