Sherlock strode forward, towards the woman behind the tape.

'Got another one, upstairs. Lestrade will show you up.' She smirked at her clever wordplay. Molly hovered behind the tape, uncertain. Sherlock rolled his eyes, lifting it so she could pass underneath.

'Come on, Molly. There's a case to solve!'

'Oh, um… are you sure, Sherlock? I mean I'm not-'

'Nonsense. Come on.'

'Whoa, freak, wait a minute. Who's she?'

'Sally Donovan, are you jealous?'

She scoffed. 'Hardly. So,' she said, appraising Molly, 'you're his new plaything, are you?'

'I-' Molly squeaked. Stronger, she said 'I'm not his plaything. I'm his-'

'Colleague.' Sherlock interjected.

Sally smirked. 'Oh, I bet she is…'

'Ah, Anderson. Our resident idiot.' Sherlock swept away towards the smaller man.

'Shut it, Holmes.'

Sherlock sniffed. 'Eugh. Molly, come here,' she scurried over, 'does that smell like… perfume to you?'

Molly could smell it. Sweet, floral and slightly sickly, the same perfume Donovan was wearing, in fact.

'Yes. Sergeant Donovan's wearing it, isn't she?'

Anderson blushed violently. 'What are you implying?'

'Oh, I don't know,' Sherlock drawled easily 'a nice cosy meal in your flat, curled up on the sofa watching trashy TV… oh dear me, Anderson. Look at the state of Donovan's nails, there are traces of skin there. And her knees. Goodness me. What were you doing….?' He turned slightly to wink at Molly. She giggled.

'I- we- stay out of it!' He spluttered.

'Sherlock! This way.'

'Ah, Lestrade. Keep your sniffer dog on a lead, will you?' He grabbed Molly's hand and towed her behind him as he swept into the building.

Molly looked around. The woman on the floor was sprawled out. Besides the fact that she was dead, she looked immaculate in a pink suit jacket and dress, with pink heels, nails and lips.

'Sherlock…?'

'Go on Molly. See what you can figure out.'

Molly crouched beside the body. She noted ragged nails, but that was really it.

'Her nails, they… um, they're all ragged. She was nervous, or- something.'

'Well done Molly. You missed almost everything.'

He began to explain at warp speed, and Molly just zoned out.

'Molly? Molly! We have to go.'

'Mmm?' She was shaken from her torpor. Sherlock's eyes were boring into her. He put a hand on the small of her back to guide her out.

'Stay away from Sherlock Holmes!' The snide tones of Sergeant Donovan reached Molly's ears. 'He'll use you. He'll take your heart and rip it apart, you just watch. When he gets bored… you'll be a broken woman, Molly Hooper.'

'I will not. I don't care what happens, what grudge you have against him, all I know is that he is the best thing that's happened to me. So shut up.' She turned to him, but he was gone.