Tegan Jovanka's psychological trauma and vulnerability to cosmic threats, compounded by her distrust of new entities aboard the TARDIS

Under the weight of lingering terror from her possession by the Mara, Tegan turns to the Doctor for absolution. He reassures her with certainty that the psychic bondage is broken, …

The Doctor attempts to reassure Tegan about her lingering trauma from the Mara but is abruptly distracted when the TARDIS shakes violently. A malfunction in the warp ellipse suggests a …