By Hillary Busis
Updated July 15, 2014 at 05:09 PM EDT
Sonja Flemming/CBS

Secrets, secrets, are no fun… unless they’re shared between a mysteriously pregnant astronaut and her possibly murderous android son.

That’s the main gist of this exclusive sneak peek at the next episode of CBS’s spooky sci-fi drama Extant, starring Halle Berry as the astronaut (who may have been impregnated by… a space ghost?!) and Pierce Gagnon as Ethan, the boy robot. It also includes a handy explanation of natural selection, delivered by a ‘bot who’s several orders of magnitude less creepy than Ethan is.

Extant airs Wednesdays at 9 p.m. ET on CBS.

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