The main technical problem with killing someone for personal gain is not getting caught.

Here’s a plan.

The target hosts tea for a worthy, clever and believable sucker. The target’s shattered body is found soon afterwards, when you + sucker have obviously been somewhere else. How could he have been killed in that short gap? Certainly not by you. 

Scatter confusion and contradictory leads in all directions, including linking the whole business to mysterious killings in a cathedral a couple of hundred years earlier, with a touch of gayness for extra spice.

Welcome to the astonishing imagination of Charles Palliser.