Castle’s latest theory is alien abduction after an astrophysicist’s death is found to be from explosive decompression. A well know alien abduction expert gets involved in the case. To complicate…

The search for Gredenko finds Jack hunted inside the Russian Consulate and a former President calling on his ex-wife.

Jonas is still in hiding, Mack and Hector are still imprisoned, Charles is on the run, Bob is in Mexico, working for the CIA and Colonel Ryan is again called…