the third degree
US /ðə θɜrd dɪˈɡri/
UK /ðə θɜrd dɪˈɡri/

1.
el tercer grado, interrogatorio intenso
intense questioning or interrogation, often in a harsh or prolonged manner
:
•
My parents gave me the third degree when I came home late.
Mis padres me dieron el tercer grado cuando llegué tarde a casa.
•
The police gave the suspect the third degree for hours.
La policía le dio al sospechoso el tercer grado durante horas.