We fear nights and death.
Heimdall had known all along where Loki was, of course. And he'd told the king as such. Why he hadn't been exposed wasn't too difficult a mystery to unravel. Thor loved him. After a 'secret' council meeting, the blond brother had come to the black-haired one and began questioning him about Baldr and their history. Of course, thankfully, Loki had nothing to say. He had no memory of it. He was put on edge by Thor's telling of Eva's certainty concerning the newcomer, however. She took every opportunity to set things straight, and if it inconvenienced Loki, he felt she took pleasure in that. As for what Thor was asking now... a device that could hold memories?
He smirked. "There is something that might have served as such a container." But Loki's recollections were hazy... More smirking. "I should love to contribute to your search, brother, but there is the topic of my inevitable punishment to discuss..." should he be found guilty of the charges put before him. And he would be. Not that he could recall the crime.