Blindspot (2015)

S1E4 Bone May Rot

Title: Bone May Rot Plot: Patterson, along with her boyfriend David, a master of puzzles, unravels a tattoo hint leading them to the Centers for Disease Control (CDC). During their investigation at the CDC, the team finds a concealed message on Jane's skin, revealing a scheme with potentially disastrous effects worldwide. At the same time, Jane and Weller's relationship deepens, adding a personal layer to the unfolding crisis.