Hermione was one of the few awake when the ICW arrived to see if she'd made any progress. She met them at the portcullis that had been closed for the night, waving her hand to raise the massive metal door. She then led them into the meeting room with a swirl of the robes Nagini had picked out for her.

The two representatives took a seat at the large table as she used her wand to fill the kettle and put it on the fire. She took a seat opposite them in one of the large chairs and they filled her in on everything that they had discovered.

It was a short conversation because nothing seemed out of order. His bonds had been checked by Lisette Lussier as she did every day at lunch time. The only discrepancy on that front was that she'd cancelled a holiday that morning because her daughter was sick. They'd even checked that fact out of desperation; she'd come home from Beauxbatons several days before with a nasty case of Banishing Coughs.

The wizard who'd been sent with his meal had been interviewed and nothing unusual had come up there. He'd picked up the food from the muggle kitchens and changed the utensils to plastic, then he'd taken it to the usual cell. Again, the memories checked out and the only reason he was really under suspicion was that he'd once expressed pity for Grindelwald and his grandparents had been followers of his in the 1940's. Although that was nothing special when most of wizarding Europe had been under his thrall, most people had a great grandparent who'd followed him.

Then it was time for Hermione to report on what she had found, she clutched the vision tightly under the table as she lied about how she'd spent the entire evening searching his room for clues. She said nothing about how she'd buried herself in the library to search for tracking spells. She also didn't tell them how she planned to spend the rest of the day looking into Grindelwald's personal library and research for more advanced magic

'When do you think he'll strike?' One of the witches asked, tapping her sheet of notes with a quill. Hermione paused for a moment, pondering her answer. She needed to make herself invaluable to them, she needed to be on the front lines if they finally found him so that she could spirit them away to their ICW immune Lichtenstein castle where they could work on proving his innocence from safety. Then again, she needed to have him found as quickly as possible and the ICW had resources at their disposal.

'Whenever we duelled he would always strike first. He believed that put him in control of the situation.' She finally answered, it was a less than subtle reminder that she was the only living witch to have traded spells with the Dark Wizard. Maybe she could get Harry to drop some hints to remind them that he had duelled Voldemort, then she would have an ally.

Almost as if thinking had summoned him, Harry appeared at the door with a letter. He tossed it to Hermione, despite it being clearly marked with a purple seal. She read it with dread uncoiling in her stomach – it was a report of a major statute of secrecy breach by Grindelwald in Paris. The representatives in her home were summoned and an invitation was extended to her to lend her perspective.

She passed the scroll to them, and allowed herself to be side along apparated to the Wizarding section of the cemetery in Paris. They arrived inside a police cordon, manned by ICW officials dressed as officers and "taking statements" from every muggle that had witnessed the incident. She saw a confused muggle telling another that there had been a gas explosion, despite the older man's insistence that there had actually been a burning triangle in the sky.

The witch that greeted them had frazzled dark hair and her police uniform was rumpled. She briefed them on the situation; Grindelwald's signature blue fire had seared his symbol in the air within sight of over a thousand muggles. There was only one injury from a house that had caught fire but fortunately he had only suffered minor burns and had been sent to a muggle hospital.

Hermione knew immediately that this wasn't Grindelwald's work. There was just no point to it, Gellert didn't make mistakes with his fiendfyre; it was his favourite spell, so it never would have spread to a house unless he meant for it to. If he had intended it, there was no way he would have let the muggle get away with such minor injuries. Then there was the obvious evidence against it being fiendfyre at all – for a start it was impossible to force fiendfyre into a specific shape without engraved runes, the very nature of the spell made it form magical animals.

She was shown to the centre of the arena where bystanders claimed the spell had been cast from. She paced the area but the stone floor yielded little evidence. Eventually she was called over to a white police tent with the officials.

'This incident was clearly not an attack so we can only assume it was a message of some sorts to his followers. Maybe he is hoping that whatever signal he has just sent was passed down to the children of his old supporters.' The hectic looking witch said as soon as everyone was gathered. Two Spanish wizards muttered something furiously between them before finally falling silent.

'Maybe an old assembly point.' One of them finally spoke up.

'Or a signal to begin some plan.' The other added with a furious glare at his peer.

'This wasn't Gellert's work.' Hermione said breezily and seven pairs of astonished eyes fixed on her. 'I have seen his spellwork; this is too messy, even with a borrowed wand.'

'So it vas a diversions?' The German wizard asked, tugging at the end of his black moustache.

'Or a call from one of Grindelwald's followers to him; maybe to let him know that he still has supporters.' An American wizard murmured and everyone fell silent for several minutes as they pondered their options.

'Mr Plumber, please go to the archives; I want a list of every descendant of Grindelwald's closest followers. Anyone who might move to support him, I want to know about it. Kostova, please accompany him and send a team to any high risk candidates on the list immediately.' The harried witch ordered and one of the British wizards disappeared with the German.

'Haani and Gill, check on the international prisons with a class A warning.' A woman in a hijab took the arm of an American woman and they disappeared with a pop.

'Miss Granger, we would appreciate if you could try and find any mentions of this signal in your home. In the meantime we will keep you up to date. Don't be afraid to send an owl if anything comes up.