Unlike the homeless man, the suicide ghost fought her savagely. He had chosen the manner and moment of his death, and he was damned if he’d have it stolen from him. He struggled in her arms and resisted her with all his will; but it didn’t stop Natasha, or even slow her down. Because she was a Class Ten telepath, and an experienced eater of souls; and he was nothing more than a sad little ghost. She ate him all up, every last bit of him, until there was nothing left in her arms. Natasha straightened up slowly and wiped her mouth with the back of her hand.

“Oh, you little tease,” she said thickly. “I do so love a bit of foreplay . . .”

Erik applauded languidly. You couldn’t stay shocked all the time around Natasha; it wore you out. “I do so love to watch a professional doing what she does best. Speaking of which. Perhaps now we can get on with what we’re supposed to be doing down here . . .”

“No,” said Natasha. “I’m not done yet. He was fine for an appetiser, but I’m still hungry.” She jerked suddenly round to glare at Happy. “You! Stop fighting me! Or I’ll let Erik play with science girl some more. Now, work with me. Find me something more filling, more satisfying. Because you’re starting to look pretty tasty yourself, little man . . .”

And then she broke off, looking round sharply. Something had changed on the platform; she could feel it. Even Erik’s head snapped round, looking for something he could sense, if not put a name to. Natasha looked slowly round her, then stopped as she realised something had changed in the poster on the wall beside her. It didn’t look like a poster any more. The gaudy colours in the painted advertisement had come alive, taken on depth and meaning and reality, like a window into another world. Natasha moved slowly back to stand with Erik, putting the cat computer between her and the strangely altered poster.