Sense And Sensibility help me with homework: Critic William H. Galperin does not like

Critic William H. Galperin does not like Colonel Brandon. He has characterized Brandon’s pursuit of Marianne as “insistent, if sinister.”

As one part of his case against Brandon, he refers to two points in Willoughby’s final conversation with Elinor in which anonymous informants figure. “Mrs. Smith had somehow or other been informed” Willoughby says, of his affair with Eliza, and later “some vague report” of Marianne reaches his fiancée. William H. Galperin has argued that this unnamed informant can only be Colonel Brandon.

Is it possible that Colonel Brandon is, in fact, the evil mastermind behind the entire plot?

Did you suspect as much?