When shabnam returned eastenders announced she would return with a 'dark secret'
Has that just been forgotten about?

Yes seems like it

It's so dark the writers feel sick to their stomach when they write about it, so they never bother.

It seems like she told Carol a few episodes into her return, because she said "Why do you think I'm even here?" or something like that and then it cut to Carol leaving the house.

But considering it hasn't been mentioned since it seems like it's been dropped. Hopefully it's readdressed when the big Masood story starts.

The massods need axing, Tambore is like a lump of wood- no stories, no friends, she is a poor replacement for zainab who despite being a nause could make you laff at times, and Massod has been a spare part since before yooseff char broiled at the B&B. They have no stories, they are not remotely interesting and frankly they can shove her dark secret, infact they were finished the moment zainab went off in that cab and should have been axed then.

tenchgirl, I couldn't agree more.

I agree entirely. Cannot abide Tamwar! Shabnam's is crap and that koala bear postie is just a fool! Get rid!