| Timeline |
| 1810s •1820s • 1830s • 1840s |
| 1850 • 1851 • 1852 • 1853 • 1854 1850s part of the 19th century 1855 • 1856 • 1857 • 1858 • 1859
|
| 1860s • 1870s • 1880s • 1890s |
In the 1850s, bug-like aliens came through a space-time rift in Paris. They departed in panic as soon as Ace mentioned the name of the Doctor. (PROSE: Set Piece)