Adam O'Neill
D     E     C     E     A     S     E     D
Gender: Male   Male
Died: October 2005.
Status: Deceased- killed by NCIS Agent Paula Cassidy.
Portrayed by: Lawrence Monoson
 First Appearance
  ●   NCIS: Mind Games (episode).
 Last Appearance
  ●   NCIS: Mind Games (episode).
List of Appearances

Adam O'Neill was a lawyer for serial killer Kyle Boone and also Boone's accomplice and a copycat killer.



NCIS Season 3Edit


  • Four unnamed female victims- (same M.O as Boone's)
  • Agent Paula Cassidy- (attempted but she fought back, killing him)
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