what episode did kate leave ncis?
Kill Ari - Part 1
entailment
 Fox then appeared in the first seven episodes of the eighth season , before departing the main cast . 

contradiction
 The seventh season was a time of closure for The X @-@ Files . Characters within the show were written out , including The Smoking Man ( William B. Davis ) and Mulder 's mother ( Rebecca Toolan ) , and several plot threads were resolved , including the fate of Fox Mulder 's sister Samantha . After settling his contract dispute , Duchovny quit full @-@ time participation in the show after the seventh season . This contributed to uncertainties over the likelihood of an eighth season . Carter and most fans felt the show was at its natural endpoint with Duchovny 's departure , but it was decided Mulder would be abducted at the end of the seventh season , leaving it open for the actor 's return in 11 episodes the following year . " Requiem " , the seventh season finale , was written by Carter both as a possible series finale and as a way to segue into a new season . However , the producers found it difficult to convincingly write Duchovny 's character out of the script , and explain Mulder 's absence in the episodes of the upcoming season . 

entailment
 On July 30 , 2013 , Mays confirmed that she would depart the show after the fifth season to work on other projects , but stated that she would be open to returning as a guest star in the future . 

entailment
 Petersen then appeared in the first ten episodes of the ninth season , before departing the main cast . 

contradiction
 On March 26 , 2010 , a statement was issued from Fox which explained that season eight would conclude the original series . Kiefer Sutherland gave a statement : 
