Theory
Hmmmmmm.....they seem to a rumored fifth Sly Cooper game. It's title is going to be "Sly Cooper: Thieves Be Forever". Rumors remark that they are only five time periods in "Thieves In Time": Medieval Japan, American's Wild West Period, Medieval England. Ancient Scotland/Ireland, and Ottoman Empire.
The plot here is that it's been a while for Sly and his crew. One day while reading the "Theivus Racoonus", it vanish totally out of Sly's hand and sight — like Penelope did in the intro to "Sly Cooper: Thieves in Time". As usual, Bently's time machine still need a item to go that time period. The item need to be stolen this time is a Eypgtian make-up kit ["I AM NOT MAKING THIS UP!"]. They meet up with Nayla, Neyla's good twin who will only allow the item to be stolen if Sly can beat her in fight. Sly beats her — abut accidently starts a special robot programmed with Miss Fox's personality pre-Sly 2.)
The time period visited in this game are:
- Episode 1: Ancient Egyptian (Slytunkham),
- Episode 2: Blood Bath Day's Prime: The Pirate-Era Carribeen Sea (Henrietta)
- Episode 3: Victorian London (Thaddeus)
- Episode 4: Pulp-Era Germany (Otto)
- Episode 5: Paris of The Future (Sly's son/daughter)
If this theory turns out to be the truth. I will consider "Thieves Be Forever", a Part 2 of "Thieves in Time" and will include it in this living blogging.