Question

“A mystery I propose to explain.” What is the mystery the speaker proposes to explain?

Answer 1

The speaker wants that the intruder should explain what mystery is associated with him. The mystery is about Gerrard’s placing his orders on telephone. And he goes out suddenly and returns in the same way.

Answer 2

Gerrard's proposed explanation for the mystery was the fabricated narrative he concocted to evade the intruder and safeguard his own life. According to his tale, Gerrard himself was implicated as a criminal akin to the intruder. He queried the intruder about the conspicuous absence of tradespeople and his enigmatic transient presence. However, the situation unraveled swiftly as unexpected complications arose. Gerrard had committed a murder and managed to evade capture. Regrettably, one of his associates had been apprehended, leading to the discovery of incriminating evidence that should have been disposed of. Gerrard claimed he had anticipated trouble that very night, hence his preparedness with a packed bag, poised for escape.