BBC America has debuted the trailer for the 4th season of its sci-fi drama Orphan Black, as well as announcing a premiere date of Thursday, April 14.

The one-minute trailer is a bit jittery, but it mimics the position of half-knowledge that the many Leda clones, Sarah Manning especially, are in as the season opens.

A teaser was released for Season 4 in January (see “Geek TV News Round-Up”).

There is a steady merchandise stream flowing for the property, IDW Publishing is releasing both Orphan Black comics and games (see "IDW Announces 'Orphan Black' Tabletop Games").