Molly has never been afraid of getting a needle because she knows the Needle Ninja will reward her bravery with a basket of Japanese lollies, cakes and toys. Carl has never heard of this person and thinks Molly has been tricked by her mum and dad. But is there any harm in believing in the Needle Ninja? And is it OK for parents to tell their kids stories if it makes them feel better?

Would you like to live forever? Molly and Carl like the idea of being immortal. The upsides: you won’t ever die, you’ll never run out of time to try new things and meet new people. The downsides: drinking blood and sleeping in a coffin, and your non-vampire friends will all leave you when they die. So, would immortality be worth it? And how can you make a decision about something so hugely different from any experience you’ve ever had before?

We visit the bedroom of one of the messiest kids we know, Harriet. She hates cleaning her room more than anything in life and it always looks like someone opened every drawer and threw all the contents into the air. But is it her fault that her room is a pigsty? And if other kids can manage to keep their rooms tidy, why can’t Harriet?

If someone does or says something bad to you, but then apologises for it, should you forgive them no matter what? Even if you don't really feel it in your heart? Brains Trust: Lyneham Primary School: Neve, Ashwyn, Alice, Ava, Sammy.

The Titanic cruise ship hit an iceberg in 1912 and sank to the bottom of the ocean. Lots of people died because there weren't enough life rafts for everyone. Women and children were offered seats on the lifeboats first because of their age and gender. But is that fair? Are the lives of kids more precious than the lives of adults? Guest: David Dyer, author of The Midnight Watch. Brains Trust: Buranda State School — Meena, Caitlin, Banjo, Rosey, Hailey and Rex.

Imagine if you were being watched every second of the day to make sure you behaved well. And then you got rewarded or punished depending on how you acted? In this episode, we take a long hard look at Santa Claus, because news flash, we are told he's watching you day and night.

Meet Oedipus. He's the main character in one of the world’s oldest stories. He lived a long time ago and he did some pretty bad things. But was it his fault or was it fate? Was there anything he could have done to avoid tragedy? Join Molly, Carl and Matt as they sing their way through an ancient tale of terrible misfortune.

Molly, Carl and Matt become lost at sea, they've run out of food and they lack basic survival skills. So, would it be okay for them to eat each other if they get really really really hungry? Maybe don't listen to this episode while you're eating!

This season we go on a little adventure in our minds. Join Molly, Carl and Matt as we imagine what the world might be like without things like schools and sadness and punishment. Would everything be better without them?

Imagine if something private you told a friend could be shouted out for the whole world to hear? Or if an embarrassing bodily function was shared with everyone? Some people say privacy is only necessary if you have something to hide, but are there other reasons to keep certain things just for yourself? Brains Trust: Plenty Parklands Primary School in Mill Park, Melbourne: Ibrahim, Kiara, Victoria, Vinugo and Sienna.