Yes, Cassie - I think? Who was in an abusive relationship with Macca, Martha’s adoptive brother. Martha Roo’s daughter, of course, not Martha Roo’s mum 
But I think Evie and Matt and Matt’s little sister went to Vietnam (not Thailand) first and then Zac followed them because he literally now has no famil left except Evie and, tbh, given her track record with losing family members, I’d stay faaaaaaar away, but hey.
If Robbo is a deep undercover cop, does that make him Robbocop? 
Leah as Henry VIII... well, Vinnie died, Dan Baker died and she divorced Zac. So in terms of Henry - divorced, beheaded, died, divorced, beheaded, survived - she’s got one divorce and one death to go (I’ll let her off having to actually behead them) before she meets the lucky guy who can survive...