Sandra Lindquist

NUMB3RSS2, E22

Backscatter

An FBI investigation into a computer hacking scam, which taps into a bank's system to gain access to customer identities and financial assets, becomes personal for Don when the Russian mob spearheading it comes after him and threatens the safety of Charlie and Alan. Will Patton guest stars.
NUMB3RSS2, E20

Guns and Roses

An ATF agent is found dead in questionable circumstances involving an elaborate bank heist, and Don demands to take on the case after he learns the victim is his ex-girlfriend. As the pressure of his job mounts, Don recognizes the impact his professional life has on his personal life, and he decides to investigate his flirtation with AUSA Robin Brooks.