Tandy and Tyrone dug deep into her mind with the hopes of freeing her while also discovering the truth about their foes. Their exploration didn't cure Lia's darkness; however, the truth of Andre's main goal and the secrets of the past came to light.
Did the journey into the mind hit the right note?
"Blue Note" focused mainly on providing exposition and backstory to fill in many of the missing pieces. Before Tandy, Tyrone, and Mayhem could stop the Big Bads from completing their mission, they (as well as we) needed to know how the villains got to this point.
The problem, however, is that the majority of exposition was held until Cloak and Dagger Season 2's penultimate episode.