To make the terminal bean
 
 To make it cruel and mean
 
 The things you will need
 
 Are puppy dog tails and dandelion weed
 
 The tongue of a quail
 
 And the slime from a snail
 
 The tears of a crone
 
 Or maybe just acetone?
 
 Mash until sleek
 
 Then leave it a week
 
 Be careful not to touch
 
 As it doesn’t take much
 
 Because you know there’s no vaccine
 
 Once you’ve had the terminal bean
 
 He reread the first and eighth lines. ‘Everybody out!’ he ordered. ‘Now!’
 
 ‘One moment, ma’am,’ Flynn said into her mobile. ‘What is it, Poe?’
 
 ‘We need specialists, boss.’
 
 ‘Why?’
 
 ‘The poem’s about a poison bean.’
 
 ‘So?’
 
 ‘It also mentions acetone.’
 
 ‘Shit,’ Flynn said. She began urgently whispering into her mobile.
 
 ‘What is it?’ Karen Royal-Cross said. ‘You’re scaring me. Why’s acetone important? It’s just the stuff they use in nail-polish remover.’
 
 ‘Ricin,’ Poe said. ‘Acetone is used to make ricin.’