Episode:Skin Deep

is the seventh episode, in the fourth season of NCIS: Los Angeles, and the seventy-ninth in the series as a whole excluding the back door pilot episodes and any crossovers. The episode is the second part of a two part episode.
==Synopsis==
OSP investigates the connections between a surfer and scientist working for the Navy.
==Cast==
===Series Regulars===
===Recurring Cast=== 
===Other Cast===
Category:Season Four Episodes