The news of Lagertha's death reached Askild and he was livid, he didn't know how to process this because Lagertha was a lady he respected greatly.
This was no doubt a loss to the Viking Kingdom but Askild was growing suspicious of the players that could potentially be involved.
There was no way that Rugalf would do something this obscene considering he had more to gain with her alive than dead.
Trygvve wasn't a man that had an interest in Ragnar or Vestfold, he had his eyes set on the Kingdom that Rugalf ruled even though he knew that it wouldn't fall.
Rugalf wasn't only a monster but his brothers were fierce warriors as well for that was the only way for them to survive.
This left one person in the equation and that was Signy but even he didn't have the brains to attack this complex considering that Aslaugh's home was attacked as well.