Ubisoft has confirmed that the Assassin's Creed: Syndicate pre-order perks include Charles Darwin and Charles Dickens missions.
A set of Assassin's Creed: Syndicate missions starring Dickens and Darwin are available if you pre-order the game.
Of course, as with everything Assassin's Creed, Dickens and Darwin are embroiled in some sort of conspiracy.
At the time of writing, it's not known whether the Theory of Evolution author Charles Darwin or Victorian novelist Charles Dickens will appear in the game outside of this pre-order exclusive mission.
From the mission trailer below, it seems that this might be one of the most substantial pre-order perks that Ubisoft has offered to date.
Ubisoft usually goes along the lines of doling out specific gear to specific retailers and then offering a smattering of secondary missions for special editions.
You can usually grab all this content in a post-launch pack for those who wish to nab it all separately.
Take a look at the Assassin's Creed Syndicate pre-order mission trailer below: