Henna

Henna Ellen Caplin, or "Henna" is one of the main characters of an ARG (Alternate Reality Game) launched by Bioware called "Seeking Henna". Henna seems to have disapeared, while her friend Blake asked the internet community (especially the reddit community ) to help him.

History
Henna disappeared about two years ago, leaving no clues behind, while it seems that "there was no sign of struggle or break-in at [the disappearing] scene".

Henna had been communicating with Blake through the internet for a few years, mostly via codes.

Henna supposedly left a note in Blake's locker the 20-07-2014, three days before the "game" started. This note is considered by Blake as a riddle

Misc. Facts about Henna
Most of these facts come from Blake, but he seems to be the only reliable source of information we've got.
 * Henna was handicapped and couldn't walk since she was 8.
 * Henna was really good at puzzles.
 * Henna was "something of a Fawcett fangirl".
 * Henna was homeschooled.