Status Updates From لغز سيتافورد

I still think it's the major. The willets are... expecting an escaped prisoner to join them? Could it be Brian, the nephew? I must've read this before? Emily & Charles are the best part so far but I think there'll be another murder. Could be him or the servant (both know things).

It's Burnaby, right? He skiied there earlier & came back to do the seance or he skiied there in time to murder?? I know skiis are involved somehow & he did the seance message & used it as an alibi. He left the skiis in the Captains' sports things & will now get them all back as inheritance.
Or am I thinking of some other Christie book where skiing was involved? Not sure. That's my guess for now.