Murder in the Squire's Pew #979562

We had just settled down to business that morning—a Tuesday morning in the second week of April 1921—when the telephone bell in my room suddenly interrupted Chaney and myself in the middle of an argument. The next moment an unfamiliar voice asked a question:
“Is that Camberwell and Chaney?”
“Yes! This is Camberwell speaking.”
“This is Canon Effingham, Rector of Linwood—speaking from Linwood.”
“Yes, Canon Effingham—we know Linwood.”
“Can you and your partner come down to see me at once, Mr. Camberwell? Both of you?”
“Urgent business, Canon Effingham?—Serious?”
“Both urgent and serious!”
“Can you tell me the nature?”
“I had rather tell you in person. Can you come—this morning?”