hiː wʌz wˈɔːɹnd baɪ ɐ saɪkˈaɪətɹɪst ðætðə mˈɜːdɚɹɚ hiː sˈɔːt lˈaɪkli dɪdnˌɑːt ɛɡzˈɪst ænd ðˈʌs hiː mˌaɪt dɹˈaɪv hɪmsˈɛlf mˈæd wɪð hɪz əbsˈɛʃən ɪn fˈaɪndɪŋ ðə mˈæn.
He was warned by a psychiatrist that the murderer he sought likely did not exist and thus he might drive himself mad with his obsession in finding the man.