A test could be devised that I write down what I am thinking but don’t reveal it to a person until after they have had the chance to read the thoughts of me as to what I had written.
There are many such experiments in the literature, and the literature says they all have problems. The principal problem, as the late Martin Gardiner observed, and as Penn and Teller might agree, is that any evidence for ESP is of itself overwhelming evidence of fraud. A second problem arises if we assume the test is fair and authentic and involves (as surely it must) a written (or &c) record of what the Thinker thought, namely whether the ESP phenomenon demonstrated is telepathy or clairvoyance. A third problem, accordingly much discussed, is suitable protocols for Thinking, Reading, supervising and verifying.
And through all that, I'm not aware that any skeptical enquirer has been persuaded that telepathy exists. Or clairvoyance, telekinesis, &c &c for that matter. Accordingly, my view is that on the present state of the evidence, it's fair to say that there is no objective phenomenon that involves 'paranormal powers'.
On the other hand, as a husband of nontrivial years of experience, I learnt that two people can anticipate each other, finish each other's sentences, have a fair idea of what the other is thinking or will think, within a range of situations, none of which I regard as mysterious.