Examples of 'is this the secret' in a sentence

is this the secret - a phrase used to inquire about the confidentiality or exclusivity of information or knowledge

Is this the secret headquarters.

But what do you think? is this the secret origin of Hit Girl & Big Daddy?

Is this the secret cause behind the epidemic of osteoporosis?

Excuse me, is this the secret headquarters.

Is this the secret that the men in black are so vigilantly defending?

Excuse me, is this the secret headquarters of the gestapo?

Honey, is this the secret to happiness? because living with money means really living.

Hello, is this the secret service?

Is this the secret headquarters for you and the rest of the Russian spies?

Lupin, is this the secret of the castle?

Is this the secret of deep sea mining of Lotus Island?

Honey, is this the secret to happiness?

Is this the secret that Chang Min and you talked about … Yes.

SUBJECT Is this the secret to living another 20 years?

Is this the secret firearm Joseon calls the Divine Weapon?

Meaning of "is this the secret"