Map of Plagues - J F Penn - Bog

A city threatened by an ancient plague.
A love across borders.
A desperate choice that could break their worlds apart forever.
When a fragment of a deadly map is recovered from a medieval plague pit in London, the Mapwalker team must cross over into the Borderlands once more.
In a race against time, they must find the remaining pieces of the map in a journey across long-lost cities before the Shadow Cartographers wield it against Earthside in a devastating attack.
Can Sienna resist the call of the Shadow as she struggles to save her home?
Will Finn take a risk on love across borders or leave the Earthsiders to their fate?
Map of Plagues is book 2 of the Mapwalker fantasy series. Map of Shadows #1
Map of Plagues #2
Map of the Impossible #3