“What everyone has seen of Linda so far is only the tip of the iceberg,” she hinted.
Kellie explained Linda wants to “press pause on her life,” turning to alcohol to make “everything stop”.
“The thing about Linda is that when she is drunk, you see a side to her you’ve not seen before and it’s very unpredictable, dark and dangerous,” she said.
Elsewhere, could Linda be hiding a sinister secret about her involvement in Keanu’s death after viewers spotted a worrying clue?
EastEnders continues tonight on BBC One at 8pm.