This The Mentalist screencap contains
hueco de escalera and hueco de la escalera.
There might also be
barandilla, balaustres, pasamanos, balaustrada, bannister, and antepecho.
The Mentalist 6x12 "The Golden Hammer" -- Jane and the FBI investigate the murder of a high-tech cartographer who may have unearthed a spy ring before his death...