Iam pretty sure that brett has faked his death, i will tell you why!

first: to eliminate himself from the list and no one is gonna doubt.

second: wants to get jane busy to do what ever he wants and complete his plans.

third: he felt jane suspects him if you remember at E1 S6 .

I have been always thinking about partridge he looks psycho parching criminal to me another thing he enjoys explaining his crimes .