In order to lay a foundation for the witness to describe the murder, the prosecutor first had to show that the witness was present when the murder occurred.

As he passed gleaming wooden door after gleaming wooden door, each bearing a small plaque with the owner’s name and occupation upon it, the might of the Ministry, its complexity, its impenetrability, seemed to force itself upon him so that the plan he had been carefully concocting with Ron and Hermione over the past four weeks seemed laughably childish.

Spir[it]. VVhat voice is that, my yong Lord? ſpeak agen. […] Eld[er] bro[ther]. Thyrſis? vvhoſe artfull ſtrains have oft delayed / The huddling brook to heare his madrigale, / And ſvveeten'd every muskroſe of the dale, […]

Here is the beastly thing. 'Every person professing to tell fortunes or using any subtle craft, means or device to deceive and impose on any of His Majesty's subjects shall be deemed a rogue and a vagabond', and so on and so forth.