Psykopaten skjuler sannheten.

Because Norwegian often marks definiteness by adding an ending to the noun.

• psykopat = a psychopath / psychopath
• psykopaten = the psychopath

The ending -en is the usual definite singular ending for many masculine nouns.

So:

• en psykopat = a psychopath
• psykopaten = the psychopath

Unlike English, Norwegian often does not use a separate word like the before the noun. The definiteness is built into the noun itself.

For the same reason: sannheten is the definite form.

• en sannhet = a truth
• sannheten = the truth

Here, sannhet is a feminine noun in Bokmål, but many feminine nouns can also be treated as masculine in modern Norwegian. That is why learners may also see:

• sannheta = also possible for the truth in some styles
• sannheten = very common and fully correct in Bokmål

So in this sentence, sannheten means the truth, not just truth in a general sense.

Skjuler is the present tense of the verb å skjule, which means to hide or to conceal.

Examples:

• å skjule = to hide
• skjuler = hide / hides
• skjulte = hid
• har skjult = have/has hidden

In Norwegian, the present tense is the same for all persons:

• jeg skjuler = I hide
• du skjuler = you hide
• han/hun skjuler = he/she hides

So Psykopaten skjuler sannheten literally matches The psychopath hides the truth.

Because Norwegian verbs do not usually change according to person or number in the present tense.

In English:

• I hide
• he hides

In Norwegian:

• jeg skjuler
• han skjuler
• de skjuler

The verb form stays the same. This is one reason Norwegian verb conjugation is often simpler than English.

The basic word order here is:

Subject + Verb + Object

• Psykopaten = subject
• skjuler = verb
• sannheten = object

So:

Psykopaten skjuler sannheten
= The psychopath hides the truth

This is the normal word order for a straightforward statement in Norwegian.

That would normally change the meaning or sound very unusual.

In Psykopaten skjuler sannheten, the subject is psykopaten, so the psychopath is doing the hiding.

If you put sannheten first, Norwegian still follows the V2 rule in main clauses, so the verb must remain second:

• Sannheten skjuler psykopaten.

This structure would usually be understood as The truth hides the psychopath, because the noun before the verb is typically read as the subject unless context strongly suggests otherwise.

If you want to emphasize the object while keeping the original meaning, you would often say:

• Sannheten skjuler psykopaten.
  This can in some contexts mean The truth, the psychopath hides, but it is potentially ambiguous and much less natural without extra context.

For learners, the safest interpretation is:

• Psykopaten skjuler sannheten = the psychopath hides the truth.

No, not in this sentence.

In Norwegian, a simple definite noun usually appears without a separate definite article:

• psykopaten = the psychopath
• sannheten = the truth

You use den/det/de before a noun mainly when there is an adjective:

• psykopaten = the psychopath

• den farlige psykopaten = the dangerous psychopath

• sannheten = the truth
• den ubehagelige sannheten = the uncomfortable truth

So without an adjective, psykopaten and sannheten are correct by themselves.

• psykopat is usually masculine: en psykopat
• sannhet is traditionally feminine: ei sannhet, but in Bokmål it is also very common to use the masculine article en

That gives forms like:

For psykopat:

• en psykopat
• psykopaten

For sannhet:

• ei sannhet / en sannhet
• sannheta / sannheten

Many learners choose to use the common-gender-style forms in Bokmål at first, since they are widely accepted:

• en sannhet
• sannheten

A rough guide is SHOO-ler, though the Norwegian sound is a bit different from English.

A few points:

• skj at the beginning is pronounced like a sh sound.
• u in Norwegian is not exactly the English oo sound, but oo is a decent first approximation for many learners.
• The r is usually clearly pronounced.

So skjuler is roughly:

• shyoo-ler or shoo-ler as an English-friendly approximation

Also:

• psykopaten is roughly psyko-pah-ten
• sannheten is roughly sahn-he-ten

These are only approximations, but they help you get started.

Yes. Å skjule can often be translated as either to hide or to conceal, depending on context.

So this sentence could be understood as:

• The psychopath hides the truth
• The psychopath conceals the truth

Conceal sounds slightly more formal in English, but both match skjuler well.

Not as naturally.

Norwegian has two related verbs:

• å skjule = to hide / conceal, often for abstract things like facts, motives, or emotions
• å gjemme = to hide / put away, often for physical objects

So:

• Psykopaten skjuler sannheten = very natural
• Psykopaten gjemmer sannheten = less natural, because truth is abstract, not a physical object

A useful rule of thumb:

• use skjule for secrets, truth, feelings, intentions
• use gjemme more often for things you can physically put somewhere

You would use the indefinite form:

En psykopat skjuler sannheten.

Here:

• en psykopat = a psychopath
• sannheten = the truth

So the difference is:

• Psykopaten skjuler sannheten = The psychopath hides the truth
• En psykopat skjuler sannheten = A psychopath hides the truth

Yes. Grammatically, it is completely normal and natural.

It has:

• a definite subject noun: psykopaten
• a present-tense verb: skjuler
• a definite object noun: sannheten

It is a clear, standard example of Norwegian sentence structure: Subject + Verb + Object

So even though the content is dramatic, the grammar is very ordinary and useful to study.