They're all being brainwashed by Yvonne but atleast the other brother apologizes when he realises he did something wrong while brainwashed while Derrick doesn't
I also want to know because I'm hating Derrick
Deep inside I think that the bias that he has against Penny is genuine because just after knowing about the poison, he has many questions but the one that leave his mouth is related to Yvonne, and he seems more concerned about Yvonne being suspect than Penny's health
yeah, he's never genuinely like her as a sister unlike reynold and it got worse with the brainwashing
Yeah, that's right .-.
Just an assumption, is he maybe affected by his affection score for yvone, so he is not able to think clearly about Penelope?