Book 2: Previously

On a normal Lothal night, a ritual was performed.
That ritual has now been undone.
And now it is up to the rebels to repeat the past by perform the ritual again for hopefully the last time.
At least if they want to save their Specter of the darkness that is swallowing him slowly.
The clock is ticking before their Specter 6 perhaps can't be saved anymore.

Find out in the last book of the series Past

Book 1: old friends (----> Friends of the Past is an alternative title that does not get used, you can find the first book still under old friends)
Book 2: Ghost of the Past
Book 3