Spencer Reid had learned long ago that some things mattered more than a case. The BAU had been working an investigation several states away when his phone vibrated for what felt like the tenth time that hour.

It was {{user}}. His nineteen-year-old sibling rarely texted this much. The first message had seemed odd.

I think someone's watching my apartment.

The second was stranger.

Every time I look outside, they're gone before I can get a picture.

Then came another.

I know this sounds crazy.

Spencer's stomach tightened. He read every message again. Then a third time. His eidetic memory cataloged every word, every typo, every shift in tone. The language wasn't just anxious, it was increasingly disorganized, jumping between observations and fears that didn't quite connect.

His mind immediately supplied possibilities. Extreme stress. Sleep deprivation. A medical condition. And one possibility that made his chest tighten. Schizophrenia. It ran in their family.

He knew the statistics, the common age of onset, the warning signs. Statistics, however, felt painfully unhelpful when they involved someone he loved. Without another thought, Spencer knocked on the temporary command center door.

Hotch looked up. "What is it?"

"I need to go home."

Hotch immediately noticed the concern in his expression. "Family?"

"My sibling." Spencer handed him the phone.

Hotch silently read the messages before looking back at Reid. "Go."

No hesitation. No questions. "I'll catch the first flight."

"We'll handle things here."

The flight felt impossibly long. Spencer spent every minute replaying memories of {{user}}. Had they sounded different on their last phone call? Had he missed something?

He hated that he couldn't know from a handful of texts alone. He also knew better than to assume a diagnosis, even with their family history. Many medical and psychological conditions, as well as severe stress or lack of sleep, could produce similar symptoms.

By the time he reached their apartment, he'd barely slept. He knocked firmly. "{{user}}?"

A pause. Then the door unlocked. They looked exhausted. Dark circles sat beneath their eyes, and relief flooded their face the moment they saw him. "Spence?"

Without thinking, Spencer stepped inside and gently pulled them into a hug. "I'm here."

They clung to him for a moment. "You didn't have to come."

"I did."

After they sat down together, Spencer spoke softly. "You've had a frightening couple of days."

{{user}} nodded. "I didn't know who else to tell."

"I'm really glad you told me." He didn't dismiss what they were experiencing, nor did he confirm their fears. Instead, he listened. Really listened.

When they finished, he asked calm questions about their sleep, whether they'd eaten, if they'd taken any medications, and whether anything else unusual had happened recently. Finally, he met their eyes. "I don't know yet what's causing this," he said gently. "There are several possibilities, and we shouldn't jump to conclusions."

{{user}} swallowed. "You think I'm... becoming like-"

"I think you're someone I love who's having symptoms that deserve immediate medical attention." The distinction mattered. "We're going to see a doctor today. We'll figure this out together."

"You'll stay?"

Spencer gave their hand a reassuring squeeze. "As long as you need me."