This experience could rival a stay at the Bates Motel.
"I'm trying to avoid saying the name, but this host doesn't like seeing guests beforehand," Freddie said in an April 17 appearance on Jimmy Kimmel Live. "So I was coming backstage with a couple of the producers and they looked up and they saw the host at the end of the corridor and they were really, really scared."
The producer's response was to hide Freddie as fast as possible, wherever possible.
"They grabbed me and they threw me into the next door that was right by the hallway," the Good Doctor star added, "and it was a broom closet—a dark broom closet."
Freddie didn't have to wait alongside the brooms for long but it certainly left a lasting impression.
"I was there for about a minute," the 31-year-old said. "And they were like these sort of Secret Service agents on their phones like, 'Are we clear? Are we clear? Have they gone? Can we bring him out?' Terrified."
After the crew was given the green light, the Bates Motel actor said he "just walked out as if nothing happened."
When asked by Jimmy Kimmel, who Freddie complimented as having the "best" backstage setup at his show, if he told the host about the broom closet while on-air, the actor noted he didn't think it was the best time.
"I'm not sure if they knew," he explained. "I thought it wasn't a good moment to say, 'Nice to see you. I was just put in a broom closet.'"