The crooks in London know how it works. No one carries guns and no one resists the police. Then a new gang appears that go one better. They dress as police and steal from the crooks. This upset's the natural order of the police/criminal relationship and the police and the crooks join forces to catch the IPOs (Impersonating Police Officers), including an armored car robbery in which the police must help the gangs to set a trap.
美国80年代，看似慈祥的“奶奶”多萝西娅·普恩特，以寄宿公寓为诱饵，下药、杀害、掩埋数十位弱势老年与残疾租客，将花园变成埋尸地。狱中濒死的她，回溯自己从受虐者到连环杀手的黑暗一生，用温柔表象包裹极致贪婪与残忍。
