Another ex-housemate is back from the past to take on one of this year's housemates. Today it's BB4's Federico, who joined Noirin in jodhpurs (not the same pair, obviously) to go showjumping round the Garden for today's Gymkhana task.

As the rest of the housemates, forbidden to go into the Garden, clamoured at the window, Noirin went outside to meet today's competitor.

"Have you ever done anything like this before?" he asked her.

"No," she said.

And then, he dropped a huge bombshell. Doing an impression of Michael Jackson, Federico asked Noirin, "Who's this?"

"Michael Jackson," she replied.

"Did you hear about him?" blurted Federico, "He passed away, he had a cardiac arrest."

Noirin flustered a little. "Don't tell me that," she said, not responding further to the news, perhaps trying to make sense of what she'd heard.

As they sat on the bench waiting to carry out the Task, talk then turned to life inside the House.

"How are you finding it?" Frederico asked.

"I'm OK. I'm happy. I decided today that I want to have fun." She said, not mentioning that she'd been in tears earlier in the day.

Federico carried on chatting to Noirin up for a while, until she reminded him of the other housemates with their noses up to the glass.

"You better say 'hi' to that lot," she said, gesturing over. Federico waved, then turned back to Noirin.

"I heard you're competitive," he said as the klaxon sounded and he begun hurdling around the course. "I'm not!" Although you wouldn't know it from the speed he was going.

"Aaah. The dignity," he said.

"Is that as fast as you can go?" Noirin teased.

"You're a girl, you'll beat me," he said, completing the course, but not before shouting "Michael Jackson's dead" and confirming the news a second time.

Noirin then did her lap around the Garden. Then it was time for Federico to go and for Noirin to go back inside the House with a look on her face that said, "do I tell the others what I've heard..."