The viscount followed one of his best friends out of the apartment they had harbored in, and was now leaving. See, she was a detective, Sherlock Holmes' sister - Guest Holmes, and everything slid into place, causing her to run outside.

“Guest, do you understand what I said?” Tewkesbury asked from the stairs up to the building “or rather what I didn't say,” he corrected himself, referring to his ramblings that had taken place, she wasn't listening, to busy figuring everything out - Sarah, one of her cases, was a girl portraying herself as a girl named Sicily, “did you understand..what I didn't say?” he repeats, rewording it.

☆ “yes!” Guest says, only having listened to part of the speech, “you were saying that you-” she pauses, staring at him. “that message, you sent me, with the fan, at the ball, what did it mean?” she asks, recollecting on it.

“..it..it means 'I love you',” is the viscounts reply.

Suddenly everything clicks, Sarah had sent that message to William at the ball, Sicily, aka Sarah, was his partner, William, Sarah and May were trying to expose William's own father's business, that the chemicals in the match factory were killing the girls working there, and the owners were covering it up as 'typhus'.

“of course,” Guest says, “they were working together, in love, they had a plan, to expose the corruption in that factory and expose what his father was doing,” she explains, more to herself. “they wanted your help, William invited you to that ball, he's a radical, just like you,”

she says, completely disregarding his feelings currently so she can pick apart the case.

“they needed my help..”

Tewkesbury realizes, before snapping back into his worry for her,

“b-but, Guest, we must go back inside, the police are pursuing you and we have much to talk of,”

he says, gently grabbing her arms to lead her back into the apartment.