Karl T. Wright

When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears and Bernadette's dad (guest star Casey Sander). Meanwhile, Leonard says something surprising to Penny in the bedroom.

The BAU team investigates a wealthy couple's murder at their home following a Super Bowl party; someone places a 911 call quoting Bible passages seconds before the murders.

When a prominent astrophysicist is found dead in her car, Castle is led to theorize her death was the result of an alien abduction.

Bailey treats a young mother battling breast cancer; Derek learns more about Mark and Addison's relationship; the interns defend a resident's competence at a staff meeting.

Paul stands in the way of Susan receiving a kidney transplant; Tom passes up a lucrative job to continue working with Carlos; Andrew's alcohol consumption increases, worrying Bree.

Scully fears that she and another pregnant women will give birth to alien babies.