Who burned down the Quagmire mansion?

[Optimism is my Phil-osophy]

I really don't have enough information to form a concrete opinion on the subject. The chronology of the fire confuses me. And as I tried to explain, apparently there were two times when the Quaquimire parents disappeared ... In those, they were considered dead, and in they really died ... Speaking of which, how interesting that the Netiflix series showed just that. .. My esteem for the series has increased a little more now. (For the first and second season only).

[Dante]

I don't think it's possible to determine, though as Esmé Squalor ended up in control of the Quagmire estate, it's not unbelievable that she should have been involved. The use of the passageway, though, is unlikely, given that it's the exact route by which Quigley was sent to escape; had an arsonist arrived in the mansion by that route, I'd have expected the fire to have begun in that room and for the passageway to be inaccessible. I think an escaping villain would probably have been able to hear the echoes of Quigley arriving in the tunnel, too, and to put it bluntly would have returned to finish the job.

[Foxy]

I think someone could have used the passageway and simply left before Mrs. Quagmire put Quigley down there, so they could have used the passageway system. It would kind of make sense if it was Esme, since she was in charge of their estate in the case of the parents' death, so it would have given her motive. I think the person who started the Baudelaire fire could potentially also have started the Quagmire fire. My personal opinion would be Esme, but the possibilities are endless.

[carmelita0cheryl]

What I think now fpr the Netflix series:

Esmé - propably not. 1. she was no in contact with Olaf during the MM, if she was she would propably show herself in the AA or adopt them sooner, 2. Olaf didn't know about the fire, in the AA he didn't know Quaggies will be at Prufrock too, so it was not their plan 3. she confused Baudelaires with Quagmires in the GG

The man/woman with/out hair and beard - it could be one of them, but they come together like sticked by glue and there was only 1 person in the car (which is not a big deal though)

If it was one of these, the actor would be in the episode credits, but the role could've been played by anybody

Georgina - she propably had no grudge against Quagmires, but there could be some reason she wanted to get rid of her old frenemies (the Paltryville photo: Baudelaires, Monty - dead and Lemony supposed to be dead) before starting a new life with Olaf. As wecould read in the UA Georgina actually wore the optometrist diaguise even though she was an actual optometrist, so she had the disguise kit. Also while watching the S1E7 again I noticed something, unfortunately the scene is so dark that this 'discovery' could be a nonsense imgur.com/nNWws96

I'm looking forward for other volunteers to support/deny my statements!

[carmelita0cheryl]

And in the ATWQ Cleo had a car with ‘a shiny crank on the side so you could roll down the roof’ and ‘color of someone buying you an ice cream cone’ sounds like the arsonist’s car but I doubt it was Cleo possibly another ATWQ reference in the show? Not aplying to the books though.

[Dante]

I don't know about the roof crank, but I'm fairly sure that the description of the Dilemma is simply meant to evoke any sufficiently fancy old-fashioned car.